The struggle to monetize social networks is nothing new, but one man thinks he has the solution and says he can double Facebook's revenue with his plan.

That man is 28-year-old wunderkind David Koretz, the CEO of BlueTie, a tiny email provider that uses what it calls "featuretisement" ad-serving. Essentially, BlueTie matches events that users type into their calendars or email with useful ads. Discussing a planned vacation could yield ads about flights that day.

"If you make advertising feel like features, people will use it," Koretz said in an interview with Forbes.

Lately, Koretz has been pitching featuretisement technology to Facebook, MySpace and Microsoft. The best way to create successful ads is by catering to how consumers use social networks, Koretz said. Some of his ideas for creating cash include a click-to-print photo service and the ability to buy movie tickets via instant message conversations.

BlueTie currently has 26 brands onboard for its email featuretisements, including Orbitz, BlackBerry and Amazon, and only gets paid when a customer makes a purchase. But according to Koretz, 2 percent of his 3 million email customers are already buying. Comparatively, the clickthrough rate on the internet is only .5 percent, and that doesn’t guarantee consumers are making purchases.