One of the more friendly and useful lists I've seen:
Social Bookmarking Sites

Can be good for getting link backs and a small amount of traffic to your site.

Also the possibility of viral traffic explosions if you have exceptional content and your site gets promoted on one of the bookmarking sites as a result of lots of people voting for you.

__________________

Thanks for the list of social bookmarking sites. They are useful for getting some quick traffic. Thanks again.

__________________
Affiliates Directory - Over 2,000 Programs - Contextual Ads, CPM Popunders, plus more
125+ CPA Affiliate Networks | Earn upto $.65 CPM on Banners | Webmaster Forums