1. Sign Up For StumbleUpon
2. Manage Your Interests Selectively
3. Build Your Following
4. MOST IMPORTANTLY: Submit From A Diverse Set Of Sources!
5. Schedule Your Posts For Their Appropriate Hour
StumbleUpon Stats: Stumbling During the Day
stumbleupon.com
For an even more in-depth analysis of who's Stumbling what and when, check out the article StumbleUpon Stats: Stumbling During the Day.