I'm there. Until recently hadn't spent much time there, but am now spending more time there.
It's helped by the fact that Fraser Cain (Universe Today) and Phil Plaitt (Bad Astronomer) shared one of my links (How to create a colour saturated moon photo), so I went from ~30 followers to ~900 and going up daily.
I'm also waiting for Google to allow business profiles, so I can setup an IceInSpace profile and use it similar to the
IceInSpace page on Facebook.