Facebook is not a friendly company, it's an aggressor (see Legalpad [1, 2]). Recently we witnessed trademark bullying by Facebook (and patents too), as well as many favours done to Microsoft, which owns part of Facebook. It is known by now that Facebook gives its data to Microsoft, but then again, so does MSNBC, which can only ever pretend not to have this dependence. "Websites Rein In Tracking Tools" says Murdoch's paper and there is the following bit about Microsoft:
MSNBC.com, jointly owned by Microsoft Corp. and NBC Universal, has intensified monitoring of software being installed on visitors' computers. "The sheer volume of activity was greater than we thought," said Kyoo Kim, vice president of sales for the company's digital network. There were "a lot of things happening without our knowledge."
Mr. Kim said MSNBC is reviewing its privacy policies and marketing partners, but declined to discuss specifics.
We should all be uncomfortable about moving more and more of our cyber-activities into the embrace of a single company -- and I don't care if it's Google (one reason I rarely use Gmail) or Facebook or anyone else. Facebook has federated its "Like" button all over the Internet, so it's not trying to entirely capture your browsing and communications, but in the process it's turning its service into a glue -- replete with extremely granular data about what you do online -- that should make everyone cautious about putting so much power into a single enterprise's control. Easy to use, which Facebook certainly is, does not equate with good for you in the end.