Facebook, for better or worse, is like being at a big party with all your friends, family, acquaintances and co-workers. There are lots of fun, interesting people you're happy to talk to when they stroll up.
Sure, Facebook can be a great tool for keeping up with folks who are important to you. But far more posts read like navel-gazing diary entries, or worse, spam. A recent study categorized 40 percent of Twitter tweets as "pointless babble," and it wouldn't be surprising if updates on Facebook, still a fast-growing social network, break down in a similar way. Here are 12 of the most annoying types of Facebook users: