1. Posting pseudo-intellectual quotes that they've blatantly stolen from elsewhere to try to make themselves seem "deep".
2. People who feel the need to post a status every time there is a change in the weather (usually happens when it's snowing or there is an unusually warm day).
2. Posting terrible jokes from Sickipedia and claiming them as their own.
4. People who play those wee game things where they answer questions abut others and you have to click to find out what they've said
5. Those 30 day challenge things - are people really naive enough to think that anyone else gives a shit?