Facebook isn't the only social network that experiments on its users.
Online dating site OkCupid revealed on Monday the results of a study it conducted, in which it told subscribers they were more compatible than they really were. The result? There's something to the power of suggestion.
OkCupid, which is owned by Internet conglomerateIAC (), gives its users a compatibility score based on how they answer a series of questions on the site.
Among users who were just 30% compatible, a single message from one OKCupid subscriber to another led to a conversation only 10% of the time. But here's the twist: when OkCupid duped users who actually had low compatibility, telling them that their compatibility score was 90%, they had a 17% chance of having an online conversation.
"The mere myth of compatibility works just as well as the truth," said Christian Rudder, co-founder of the online dating site, in a blog post about the results of the OkCupid study,
The experiment worked in the other direction as well. That is, when users with 90% compatibility were told that their compatibility figure was only 30%, the likelihood of a conversation dropped from 20% to 16%.
OkCupid's results come after Facebook ( Tech30) caused a stir in June by revealing that it had changed the content mix in the News Feeds of almost 700,000 users in early 2012. Some people were shown a higher number of positive posts, while others were shown more negative posts.,
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A sunny day at California's famed Venice Beach took a dark turn Sunday when one person died and a dozen others were injured after a rare lightning strike.
John Kades with the Los Angeles Coroner's office told CNN a man in his mid-20's died at Marina Del Rey Hospital after being transported from Venice Beach. It's too early however to determine if he died as a result of "a lightning strike, drowning, or being trampled by the crowd," according to Kades.
Los Angeles Fire Department spokeswoman Katherine Main told CNN the lightning hit in the water and on the beach at 2:51 p.m. (5:51 p.m. ET). At least 13 patients - all of whom were either in or near the water, according to Main - were assessed on the scene, and of those, seven adults and one teenager were transported to local hospitals.
One patient had to be pulled from the water, but it was not immediately clear if it was the man who later died.
Another patient transported to the hospital was listed in serious condition Sunday afternoon, while the remaining six were listed as fair.
The National Weather Service in Los Angeles tweeted at around the time of the strike that "cloud to ground lightning" had been reported in nearby Marina Del Rey and at the Los Angeles International Airport. "Stay indoors if you hear thunder until it passes," the Weather Service tweeted.
Witnesses tweeted they saw a huge bolt of lightning strike the area, with one Twitter user describing an explosion that blew off nearby roof tiles.
Venice Beach, located south of Santa Monica in Los Angeles, is world famous for the carnival-like atmosphere along its boardwalk.
A week after Malaysia Airlines Flight 17 was shot down over war-torn eastern Ukraine, dozens more coffins containing remains of victims of the crash were due to arrive in the Netherlands on Thursday.
They will follow the first 40 wooden caskets, which were flown in Wednesday and greeted by somber, moving tributes across the country.
A lone bugler sounding the traditional military farewell "Last Post" marked their arrival at a military base in Eindhoven.
The grieving nation then held a moment of silence to honor those killed in the crash of the jetliner - caught in a war in which they had no part.
The plane was downed last week by a suspected surface-to-air missile over eastern Ukraine, where groups of pro-Russian rebels are battling Ukrainian government forces.
In a reminder of the ongoing bitter conflict, rebels claimed responsibility for shooting down two Ukrainian military jets on Wednesday. The rebels have denied that they brought down Flight 17.
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After spending days exposed to the elements on a Ukrainian field and then inside refrigerated train cars, the first group of victims from Malaysia Airlines Flight 17 are one step closer to home.
The first plane carrying the remains of some victims are expected to arrive in the Dutch city of Eindhoven on Wednesday.
The arrival will mark a homecoming for many of the victims. Most of the 298 people on board the plane were from the Netherlands, which has declared Wednesday a national day of mourning.
Dutch royals, government officials and families of the passengers will be at the tarmac when the remains arrive. After a solemn ceremony, the bodies will be taken to a military facility for forensic testing.
But Dutch Prime Minister Mark Rutte said it could take weeks or even months to identify the remains.
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A train carrying 282 bodies from Malaysia Airlines Flight 17 arrived in Kharkiv, Ukraine, getting the bodies one step closer to their grieving families around the world.
The train arrived at a rail station and continued on to an undisclosed location. The bodies will eventually be taken to the Netherlands.
But a litany of obstacles remain - not just in handling the remains, but in figuring out how and why MH17 was shot down over eastern Ukraine.
See more on this developing story on CNN.com.
Fierce fighting between Israeli troops and Hamas militants continued near Gaza City on Monday as the death toll from the conflict rose above 500.
Heavy bombardment hit areas east of the city, particularly the neighborhood of Shaja'ia, where a large Israeli assault Sunday contributed to the deadliest day of the war so far.
As clashes escalated over the weekend, Hamas said it had captured an Israeli soldier - a claim Israel later denied.
With no sign of either side backing down in a conflict in which most of the victims have been civilians, U.S. Secretary of State John Kerry is due to arrive in Egypt on Monday to push for a cease-fire.
Speaking to CNN's "State of the Union" on Sunday Kerry said that the United States supports Egypt's initiative for a truce and "will work for a fair cease-fire."
The United States has "shown our willingness to try to deal with the underlying issues," but Hamas "must step up and show a level of reasonableness," he said.
"No country, no human being, is comfortable with children being killed, with people being killed, but we're not comfortable with Israeli soldiers being killed either or with people being rocketed in Israel," Kerry said.
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There's no shortage of evidence that shows pro-Russian rebels shot down a Malaysian jet in Ukraine last week, U.S. Secretary of State John Kerry said.
Malaysia Airlines Flight 17 fell from the sky in Donetsk on Thursday, killing all 298 people aboard.
There's video of a launcher with one surface-to-air missile missing, imagery showing the firing and intercepted calls with rebels claiming credit for the strike, Kerry said.
"We know from intercepts ... that those are in fact the voices of separatists," he told CNN's State of the Union on Sunday. "And now we have a video showing a launcher moving back through a particular area there out into Russia with at least one missing missile on it."
Kerry accused Russia of backing the separatists.
"This is the moment of truth for Russia. Russia is supporting these separatists. Russia is arming these separatists. Russia is training these separatists. And Russia has not yet done the things necessary in order to try to bring them under control," he said.
British Prime Minister David Cameron didn't mince words either on who was to blame. In an op-ed in The Sunday Times, he called the plane crash and its aftermath "an outrage made in Moscow."
Russian President Vladimir Putin fired back with a video statement posted on the Kremlin's official website early Monday, arguing that his country has been pushing for peace in Ukraine.
"We have repeatedly called on all parties to immediately stop the bloodshed and to sit down at the negotiating table. We can confidently say that if June 28 fighting in eastern Ukraine did not resume, this tragedy most likely would not have happened," he said. "However, no one should have the right to use this tragedy to achieve selfish political objectives. Such events should not divide but unite people."
He stressed that safety must be guaranteed for international experts investigating the crash.
"We must do everything to ensure their work has full and absolute security (and) ensure necessary humanitarian corridors are provided," Putin said.
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Deadly clashes broke out after Israeli tanks drove into Gaza and launched a ground operation that escalates the conflict with Hamas.
The incursion Thursday night follows 10 days of Israeli bombardment of Gaza that has killed more than 250 people. Israel launched the aerial offensive last week, saying it aimed to halt the firing of Hamas rockets from Gaza into Israel.
Israeli Prime Minister Benjamin Netanyahu and Defense Minister Moshe Yaalon ordered the ground operation to destroy tunnels dug from Gaza into Israeli territory, according to a statement.
Thirteen Hamas militants used a tunnel earlier Thursday to launch an attempted attack in Sufa, near an Israeli kibbutz, but were stopped by Israeli soldiers, the Israel Defense Forces said.
The IDF said it had sent a "large" force into Gaza that includes infantry, tanks, artillery, combat engineers and intelligence units, with aerial and naval support.
CNN's Wolf Blitzer asked Mark Regev, Netanyahu's spokesman, whether Israel planned to occupy Gaza for a long time.
Regev didn't answer directly, but said Israel's goals are to "diminish" the Hamas military force and to show that it cannot attack Israel with impunity.
You can follow all the developments at CNN.com.
A Malaysia Airlines passenger jet crashed in a rebel-controlled part of eastern Ukraine on Thursday, spurring swift accusations from Ukrainian officials that "terrorists" shot down the aircraft.
The United States has concluded a missile shot down the plane, but hasn't pinpointed who was responsible, a senior U.S. official told CNN's Barbara Starr.
The Boeing 777 with 298 people aboard fell from the sky near the town of Torez in the Donetsk region of eastern Ukraine, officials said. A top Ukrainian official said the plane, which was on the way from Amsterdam to Kuala Lumpur, was flying at about 10,000 meters (nearly 33,000 feet) when the missile hit.
A radar system saw a surface-to-air missile system turn on and track an aircraft right before the plane went down, the senior U.S. official said. A second system saw a heat signature at the time the airliner was hit, the official said. The United States is analyzing the trajectory of the missile to try to learn where the attack came from, the official said.
The Obama administration believes Ukraine did not have the capability in the region - let alone the motivation - to shoot down the plane, a U.S. official told CNN's Jake Tapper.
Malaysian Prime Minister Najib Razak said the plane never made a distress call.
He called for an international team to have full access to the crash site.
"We must and we will find out precisely what happened to this flight. No stone will be left unturned," he said.
"If it transpires that the plane was indeed shot down, we insist that the perpetrators must swiftly be brought to justice," Najib said.
Ukrainian officials maintained that pro-Russian separatists were behind the crash.
You can follow the updating story at CNN.com