I asked because I'm seeing a good percentage of links to our site, but when I click through to them all I get is a salesy page about advertising on StumbleUpon.<p>On a related note, I read you can buy "stumbles" and readers from StumbleUpon and Reddit, but it sounds like DuckDuckGo and Whiteboard had mixed results: <a href="http://tinycomb.com/2010/07/19/our-reddit-ad-by-the-numbers-whiteyboard/" rel="nofollow">http://tinycomb.com/2010/07/19/our-reddit-ad-by-the-numbers-...</a>