Several years ago, iWon gained an audience quickly by giving away prizes (see my iWon Wins Users article). That didn't help retain the audience in the long-run. Nevertheless, Blingo is trying the same thing, promising prizes for search. The ads on the site come from Google. The search results themselves appear to come from Gigablast. The promotion model and hype is iWon, circa 2000.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.