In the official press release, the company says it has already partnered with a number of Fortune 500 companies to advertise on the beta Locket platform. Currently, a handful of undisclosed advertisers have signed on for early trials. More are expected within a month. But the company isn't desperate. It has rejected potential ads from a number of unnamed companies. Especially those provided by some online advertising networks. Locket co-founder Christopher Crawford told me early software testers didn't like receiving full-screen ads promoting certain dating or "win-a-tablet" Websites. The Locket app is currently available for downloading in the Google Play store. Next up will be a version for Apple ( AAPL) iOS devices. Crawford added the company's goal is to "hit all smartphones", including Microsoft ( MSFT) Windows phones, as quickly as possible. --Written by Gary Krakow in New York. >To submit a news tip, send an email to: email@example.com.