• Tech Crunch, Monday, March 14, 2011 12:13 PM

Content discovery engine StumbleUpon just unveiled a new ad platform today, StumbleUpon Paid Discovery. "Whereas the old Stumble ad model was primarily targeted to getting traffic for publishers, StumbleUpon CEO Garrett Camp tells me that Paid Discovery is setting its sights on bigger brands, like movie studios promoting a movie or stuff like NFL teams promoting their sites," writes TechCrunch's Alexia Tsotsis.

Paid Discovery ads -- from Web sites, videos to mobile sites -- will now show up in a Stumbler's stream without them having to click on a banner or other kind of intermediary mechanism. What's more, advertisers better target ads by some 500 different topics and demographics, including age, gender and location. Users will also be able to rate the quality of an ad.

"Paid Discovery introduces a tiered pricing plan, serving priority and analytics services for campaigns, charging advertisers .10 or .25 per unique user depending on when the ad is served," TechCrunch writes. The price points also include access to a revamped system of analytics, which takes into account information like user up-votes, demographics, share patterns and time spent.

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