This is the best article on the web reporting on that theory. These are some interesting and startling points to consider. One must have an open mind to read it though.
Missing Malaysia Airlines Flight MH370: Alien Abduction Theory buzzing on Social Media
http://www.ibtimes.co.uk/missing-malaysia-airlines-flight-mh370-alien-abduction-discussed-social-media-conspiracy-1439711
Uh ya. Because that's more likely than it crashing into the ocean.
Sure it is, except for when you look at THE FACTS.
http://online.wsj.com/news/articles/SB10001424052702304914904579434653903086282
But the huge uncertainty about where the plane was headed, and why it apparently continued flying so long without working transponders, has raised theories among investigators that the aircraft may have been commandeered for a reason that appears unclear to U.S. authorities. Some of those theories have been laid out to national security officials and senior personnel from various U.S. agencies, according to one person familiar with the matter.
The fact is, the plane continued to be tracked, in the air, long after communication was lost. If it was going down or out of control, this fact is inconsistent with it being "likely to have crashed in the ocean."
If one makes the assumption that the people who are in control of information are going to release to the population of the earth everything they know, I suppose it is more likely the plane crashed in the ocean. But those of us who are not naive about those who are the political, intelligence, economic, social, military, cultural, and media elite, have no illusions about the circles in which they operate, and the manner in how they operate.
Now, I am all in favor of continuing the search. Where this plane disappeared at does not fit the pattern of being a well known location of one of the vertices that is a site where planes and ships disappear at. I agree, there is probably a more reasonable explanation. However, once all other avenues have been exhausted, why not consider the improbable?
U.S. officials have an "indication" the missing Malaysia Airlines jetliner may have crashed in the Indian Ocean and is moving the USS Kidd to the area to begin searching.
It's not clear what the indication was, but senior administration officials told ABC News the missing Malaysian flight continued to "ping" a satellite on an hourly basis after it lost contact with radar. The Boeing 777 jetliners are equipped with what is called the Airplane Health Management system in which they ping a satellite every hour. The number of pings would indicate how long the plane stayed aloft.
It's not clear, however, whether the satellite pings also indicate the plane's location.
The new information has greatly expanded the search area and it will take another 24 hours to move the USS Kidd into position, a senior Pentagon official told ABC News.
Malaysia Airliner Kept 'Pinging,' May Have Crashed in Indian Ocean - ABC News
They knew all the time where that plane was.