you post a lot. your EXP thingy factor goes up. your level goes up. its just like a way for people to guage how active you've been/how long you've been around, etc. no need to take it seriously, just hang around, post, and have fun!
If you're not at least a level 14 or higher, you are sub human. One day we will round you all into camps and sterilize you. Then you will be released back into the wild. It should happen in the next 5 to 10 years. Consider yourself the last generation, mate.