No need to pay for the same content twice' says Sony.

A number of games available for purchase on the playstation store will be playable on both PlayStation 3 and PS Vita for one price.
Those who have already purchased any of these games will be able to play them on both systems as of February 22.

Sony says the move is to highlight the cross-platform capabilities of the PS Vita, which enables purchasers of the handheld system to play with PS3 owners over a network.
The PlayStation Vita launch has drawn a deal of criticism for Sony, who have seen a series of brutal quarters and had their credit rating devalued.

http://www.develop-online.net/news/3...r-Vita-and-PS3