This site is really bereft of UK sellers,there are only two of us and one of them is me!;
http://www.soqoo.com/so/index.php?view=ads&cityid=-215


I found this site here;
http://www.flickr.com/groups/indie_promo_ads/

This place does little for your viewing figures but its a fun site;

http://www.craftjuice.com/

If anyone can figure out how you submit things to this site can you post it?
http://blog.tizzalicious.com/

Anyone got anywhere else?