Forget poking: from February 14th, show you love someone by flinging a mis-tempered avian toward them. It's Valentines Day that Angry Birds will finally arrive on the ubiquitous social network -- just in time to ensure half the coupled population of the world misses its dinner reservation, in order to get past one more level. The basic game will be free, but upgrades like the Mighty Eagle, double-sized birds, an earthquake weapon and a max-strength cat
