StumbleUpon is the ultimate tool for web surfers. You add the toolbar to your web browser and whenever you’re bored, you can just click the button and land on a random website. It’s actually pretty ingenious, and I hope the developers are making a ton of money. You can, of course, customize your stumbling so that you only land on sites relevant to certain topics (like sports or business or cooking).
But the real draw to StumbleUpon for bloggers is that you can submit your own site’s posts. There’s no guarantee that you’ll become popular, but when you do, you’ll see …read more

Stumble Upon is a bookmarking social networking site with over 5 million members (called stumblers). eBay acquired SU back in April, 2007.
In a nutshell, users download a toolbar that allows them to stumble, or rate web pages they find on the internet. When a site is stumbled, other members see it, visit it, and may also rate it. The site has a very high “hit rate” as new content is constantly being added.
More and more entrpreneurs are using SU for business purposes. eBay sellers can use Stumble Upon to promote their eBay stores and listings. You can stumble your …read more