I'm on facebook, here: http://www.facebook.com/susan.d.fox?v=feed&viewas=1096466571
I don't use it much, because it seems to generate spam, and such. Over the course of time, perhaps I'll get into it more. Maybe when I don't have so many things to do in real life.
Etsy now has a cute little button where I can uoload my items to facebook. It seems like spam to do that, since the info would go to my friends, who already know about my shop.
It's a lot of work keeping up with all the blogs and shops and reading others blogs and flickr and facebook. People who manage it, and do it well, have my utmost respect.