I know they are no-follow. I know all they are pretty much good for is traffic, but if you found yourself thinking that you want to have some Tier 2 (or Tier 1) buffer Web 2.0 pages, would you use Blogger, Wordpress, etc, or go the Facebook and Twitter route?
Google Plus is a given since any post there almost automatically pops up in a Google search for the given keyword.
I want to use a handful of each of these, but using Facebook and Twitter almost seems worthless at this point. Am I wrong?