Sony has a lot going on right now, touting their future sales and possibly announcing the Playstation 4 shortly. They're also giving away free money, for those who use the Playstation Network that is.
Various Playstation Network users logged into their accounts this morning and found they had an extra $10 laying around. Other users have been seeing an extra $5 in their accounts, so it looks like both free and paid PSN users are getting the kick back.
The $10 credit comes with this message: "Thank you for being a loyal customer and fan of PlayStation Network. As a token of our appreciation, we've sent you $10.00 to spend on the PlayStation Store."
The credits are for North American Playstation 3 users only, so those gamers should feel a little bit better then everyone else. There's no time frame for having to spend your newly received credits, so save them if you want or pick up some new games.