Excerpt:
Facebook has recently launched a volley of trademark infringement and unfair competition lawsuits against smaller sites that it accuses of copying or infringing upon its name, style, and functionality. Among the sites that have been on the receiving end of lawsuits from the 500 million member-strong social networking giant: Lamebook, a clearly-labeled parody site that reproduces funny and embarrassing Facebook content, Faceporn (the name says it all), and Teachbook, an online resource for teachers.
In the case of Faceporn, there's a decent argument for trademark infringement. Lamebook might be satirical, but, to be fair, it does specifically copy the look of Facebook. But with Teachbook, the site neither looks like nor attempts to replicate Facebook. In the words of its creator, Teachbook is "a teacher's community where users can share lesson plans and seek advice from fellow educators."
All the same, Facebook's lawyers hold to their claim that the use of the suffix "book," and the fact that teachers can network on the site, gives Facebook the right to pursue both trademark infringement and unfair competition lawsuits.
If Facebook has no problem taking legal action against a tiny site for educators based on the fact that the site slightly resembles Facebook in name and function, I wonder why those same lawyers haven't made a move against Muslimbook, the terrorist Facebook?