Text copy of Yahoo!'s huge complaint for patent infringement against Facebook, filed on March 12, 2012.

Kara Swisher of AllThingsD writes: "In what is either the boldest gamble of its history or the most boneheaded, Yahoo has filed a massive patent infringement lawsuit against Facebook.

The attack by the Silicon Valley Internet icon against perhaps the most powerful consumer social networking site today — also based in tech’s heartland and also an important partner of Yahoo — is sure to be a controversial one, pitting Yahoo against a company that has surpassed it handily in recent years in regards to popularity among consumers..."

The complaint make for an interesting read - below: