Maybe you've heard about it, maybe you haven't. In either case, let me tell you: Stumble Upon is the best thing that happened to the web as a whole since Google, period.

Stumble Upon is a web browser plugin that allows a user to discover webpages and content based on other user's appreciation and rating, a notion that's called a "recommendation system".
It's basically web browsing "a la carte", where each of the webpages on the menu are something you should potentially enjoy.

You browsing is done by random selection inside a category. Say you like football, well, clicking the "Stumble!" button inside the football category will yield you one of the most interesting sites about football available on the net, everytime. Fantastic. But I already had reviewed that awhile ago on AdKrispies.

What's now interesting is SU's "Sponsored Stumblers" program, which seems to have a much more interesting structure than Google AdWords, and better yield. And not without arguments for it:

a) Target the exact audience you want (only qualified viewers come to your site)
b) No clickthrough required (SU pays for every visit to your site, instead of every click on a word)
c) Get feedback from visitors (Stumblers can rate your site in the SU system, possibly making you a destination of choice)

Allan Stern of CenterNetworks has posted an interesting review of SU's Sponsored Stumblers program v.s. Google AdWords. In his final comments he notedly says that"... StumbleUpon is a great alternative to click based traffic in the sense that you get a continuous stream of interested visitors. The traffic is qualified in the sense that the visitors said they were interested in your topic or category. I believe StumbleUpon ads are a better source of visitors than using interstitial ads since the users will be in your desired category."

I'm curious, I'll give it a shot.

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