Bribing people to use new app stores with free Angry Birds is the hot new thing. Soon after Amazon offered a free Android download of Angry Birds Rio as its inaugural Appstore offer, Best Buy and Intel are partnering to slingshot a free PC version of Rovio's mobile hit to US residents via the Intel AppUp Center. The only catch is that, you know, you have to use the AppUp store. Click here to find the offer.

If you're in the UK, there's no need to be angry (unless you're a bird): the same offer is available to you through Currys.

[Thanks, Marco]