Hi there!
I'm here on Pinterest:
http://www.pinterest.com/lily_razz/ I use it for my personal stuff, as well as pinning my items - and other Etsy items - on my board "Etsy Love". I also pin treasuries that I've been featured in.
http://www.pinterest.com/lily_razz/etsy-love/As for GROUP boards, you'll have be invited to the group board first, to be able to pin on the board. To find one, search for example "etsy group", then click on "boards". Here's one from another Etsy Seller for example:
http://www.pinterest.com/gooddealtoday/etsy-group-board-follow-for-invite/I'm definitely going to check out Viralwoot, thanks for the tip!
Ow, another thing, I just tried out Storewoot! If you'd like a FREE Pinterest-promotion for one of your items, use this invitation link! That way, we both get one free Storewoot promotion to use as we please! No strings attached, all safe :) StoreWoot.com/invite/LilyRazz/