Stumbleupon Algorithm

What is known about how stumbleupon decides if you get traffic or not? Im sure there has to be some sort of algorithm involved. Anyone have details regarding it?

I'd like to know when the best time to add a thumbs up is, etc....

:grin1:

Thanks in advance.

I don't have the time right now to write up an explanation of essentially how the StumbleUpon algorithm works, but I will sometime in the next few days and post it here.