Since quite long time I'm pestered by emails from academia.edu asking me to join or telling me that my name was searched and which paper is my most viewed there... , though I don't have an account.
Anyway according to wikipedia it's a private company for sharing open access papers and whatever else with a quite aggressive recruitment strategy. And some other criticisms and perhaps problematic issues.
What do you think of academia.edu?
Are you member or ignore it?
Any good or bad experiences?
So far I ignore it as I'm here and also use the scientific facebook (aka RG), which seems almost compulsory now , and which seems to have won the competition more or less.