I haven’t used stumbleupon that many times yet. I just never really got hooked on one of these social bookmarking websites.
I do know though that by using social bookmarking you can drive insane amounts of traffic to your website.
StumbleUpon is not something you would spam on. You generally want to be an active user and stumbling all good content that is worth saving.
It can be a great time waster so make sure not to spend too much time on it 
. You’ll find great and interesting articles on stumbleupon.
Here’s a bunch of resources on more tips on StumbleUpon.
- 3 Easy Tips For Improving The Potency Of Your StumbleUpon Account
- Five Tips for Getting Traffic From Stumble : Big Bucks Blogger
- How to Write Posts That Set StumbleUpon on Fire
- 28 Tips To Make You a StumbleUpon Superstar.
- Building Your Blog With StumbleUpon
