Gravee soft launched tonight. It has an interesting business model. In addition to pulling in search results from Google, MSN and Yahoo (Alexa coming soon), Gravee also allows publishers to claim their site and, theoretically, get a piece of Gravee’s revenue. Here’s how it works: With Gravee’s AdShare program, when a user clicks an ad on Gravee, up to 70% of the ad revenue generated as a result is