What does it mean this quote about facebook?

[Star]

''Last year three Democratic senators requested that the FTC look at Facebook's information-sharing policies.
Apps like Farmville and Causes also shared users' information with advertising and tracking companies, according to the Wall Street Journal''
Could you please make it more clearer???

[Dinky Willard]

...Facebook is interconnected with everthing. And if you've ever looked up p0rn while logged on- you're screwed.

[Cookie monster]

it means that facebook uses our information in a less proper way.
my browser blocks those kind of connections, bugs, google adsense (or whatever is it called) and reports back to me.