StumbleUpon has taken Intenet Markeing and Social networking to its extreme hights, People prefer StumbleUpon for getting more and more traffic to their sites as it not only provide social bookmarking facility where you can organize, store and search for resources online but it is also very good for making helpful contacts online which is  very important once you are in the field on Internet Marketing.

StumbleUpon has grown enormously after the launch of a link shortening service Su.pr which provides amazing features to stumblers to attarct traffic from various sources including Facebook and Twitter.

Blueglass has designed an interesting Infographic that has some amazing facts about StumbleUpon.

Via Penn-Olson