Hasbro, maker of the word game Scrabble, has issued the ultimate double challenge to social network Facebook and its wildly popular Scrabble-like application Scrabulous: a lawsuit alleging copyright infringement. The suit, filed Thursday in a New York district court, claims the application violates the Digital Millennium Copyright Act. Hasbro has asked Facebook to remove the game, but as of press time, the network was still allowing users to download the Scrabulous application.