Not really. After all, the only way we can interact with one another is through a private messaging system, and even finding out that someone else messaged us requires that we leave Y!A, and go to our email account!
We are supposed to be able to see when anyone in our network asked a question or starred a question, and we're supposed to be able to choose how many such questions are displayed on our home pages, but no matter what I choose, I can only see 3 of them!
We could receive some notifications through Yahoo! Messenger if we enable Y!A to interact with that, (I don't), but once again, it's not internal to the Y!A site.
If this were any kind of social networking site, we would be able to contact one another through it, without leaving the site!
If this were a decent social networking site, we would be able to comment on one another's answers and home pages.
Like others, I have found some nice friends here. However, they are far outnumbered by the trolls, hackers, and hate-mongers I've encountered.