Hi,
Yesterday I got a link for a cool site from my pal, Sorin.
The site is Kiwe9.com, and you can find a lot of ways expressing yourself using IM/Social Networking.
For example, I'm using Windows Live Messenger and need a new display picture for my account, so quickly I can go to Display Pics.

And then, choose my favorite display pic (I choose the cute bear :-) ).

I'm signing in and download my cute display pic.

And then at the Messenger you'll notice that something changed:

A nice "feature" that I'm liking at the display pic that it's responds to the basics smiles: :), :(, :D and ;-).
Really nice (in my opinion :-P).