StumbleUpon is a social bookmarking tool that has the potential to drive a lot of traffic to your blog. Unlike Digg that is known for bringing only short bursts of increased traffic, StumbleUpon tends to have longer lasting positive effects. It's also very hard to get noticed on Digg, but StumbleUpon gives every blogger a chance.

Check out my StumbleUpon overview, then compare it to my Digg overview and my 5 tips for using Digg to decide which social tool you'd like to try.

Have you had success with StumbleUpon or Digg? Leave a comment and share your success story with About.com Web Logs readers.