I was like that at first too, but then you get the idea. It's slow at first but then it picks up speed and can get overwhelming like facebook. If you're not careful on there then you can waste so much time. I'm using it now just to store anything that is inspiring to look at. It's my inspiration dump now. So instead of having those images stored onto my hard drive it's all up there instead.
I don't have any personal stuff up there though so I'm not sure if there's anything of value other than spreading your works around from yet another different source. In my opinion, it's got almost every subject on there for mass appeal so your art will be exposed to people that normally do not look at art sites.