Some people think that they are the Illuminati. Others believe them to be some form of secret world government. Whatever you think they are, they are meeting right now in St.Moritz, Switzerland.
The Bilderberg Group, a shadowy group of Western liberal global capitalist movers and shakers, thinkers, economists and politicians (both current and former) are holding their 2011 conference from the 9th to the 12th of June in the Grand Hotel Kempinski in St. Moritz. This highly secretive group of the great and the good are the focus of a huge number of conspiracy theories, mostly saying in so many words that they run the planet.
The most charitable description of them is that they promote a Western liberal capitalist view in a very subtle fashion and in such a way that in politics it becomes almost impossible to disagree with them. They don't do this openly, but it has an effect on your beliefs similar to if you go to 4 or 5 dinner parties and they all tell you the same thing in different ways, so that by the time you've finished you can't believe that there can be any differing views because that's what everybody thinks.
They may think that they are all doing the right thing, but the secrecy they surround themselves with makes people concerned. Maybe this is just to make sure they aren't the focus of anti-capitalist protesters or global terrorists.
I think it just makes them look furtive and as if they have something to hide. They should be much more transparent (especialy as many of the members of this group call for transparency in the political and business worlds all arround the globe) about what they do and what they stand for.
Here are a few links to stuff about Bilderberg, showing the range of things that is thought about them: