Lol, i felt like you did a couple of years ago, i was like.. What is all this hugs and xxooxx about? I dont know these pple and their giving me (((hugs))) and whatnot. Only i first came across all this on a different website, this one :http://www.dailystrength.org/c/Depression/support-group
You get sent friend requests and you can accept or ignore, you can write a journal, you can send ((HUGS)) you can do other stuff too (sorry sane, its a better layout and better site!)
I'm not touchy and huggy like this with my own family (other than hubby and son) So like you it all felt a bit weird, but in the end you end up doing it cos its a part of it, you just end up rolling with it, its done without any thought really. I put kisses on the end of a text to hubby and i put a ((hug)) on messages to pple on the other side of the world!
The way to feel more comfortable in social situations is to feel you have some worth, something to offer, something to add to a conversation, you dont have to be huggie feely, you just have to give off an open vibe and a willingness to listen to others.