I first thought of the forum and friends, but I mostly drink alone and I had to ask myself: if I had nobody else to share or talk about tea with, would I still be as into it as I am? The answer is a definite yes, although I don't think that I would have the same kind of variety, because I wouldn't know about as many vendors.
With that said, however, I have a few people that I can share tea with on occassion. I am friends with a married couple that like to come over on occassion just to have tea. They're not into it as much on their own, but it seems to be more a matter of being afraid to make that leap (probably financially, but partially also making online purchases). I can also take some tea up to my local tea shop and have tea with the owner (who is from China). His English isn't the best but we find a way to communicate through gestures and I always learn quite a bit. Lately he hasn't been around the shop as much, though. At some point I just need to start taking my laptop out to a teashop with wifi and do my work there - maybe meet some local people there.
Of course then there is the chat and forums here
So I chose mostly personal, but I do enjoy the social aspects when possible. I honestly can't see not having any social aspect at all, because even if I don't talk about tea with anyone in my personal life, I still often end up talking to vendors, even if just to ask a question or two.