Facebook is the most popular app on the iPhone and we've often said Twitter and iOS go together like chocolate and peanut butter. But social networks rise and fall. Remember MySpace, Jaiku, Buzz... Friendster? And hey, how about Google+ now that it's expanding beyond the techie early adopters, or LinkedIn which seems to always hover neither here nor there.

Which social networks do you use regularly? Let us know in the poll up top and give us the details, including which one(s) you prefer, how often you use them, -- and your profile link(s) if you feel especially social about it -- in the comments below.