Social bookmarking

WebmasterFeed.org:

How to Use StumbleUpon for Your Business: The Definitive Guide Tamar Weinberg has written a post about how can you leverage your StumbleUpon influence to get your submissions noticed
Increasing your StumbleUpon Audience Neil Patel writes about some easy things you can do to increase your StumbleUpon account's audience and thereby drive more traffic
Build Super Links and Traffic With StumbleUpon Loren Baker recommends submitting sites that link to your site since it can increase the link value and pass on traffic
Titles, Descriptions and Digg Neil Patel suggests putting some time into writing the title and description for Digg submissions
Top social bookmarking sites that pass link popularity earnersblog.com provides a list of 29 bookmarking sites that doesn't use nofollow on links