Posts schmotes.
But one does get a T-shirt at post level 8. I hope they have some left by the time I get there which is when'ver

The levels are to encourage participation on the site.

don't worry about the points system

At the top of the page, click on ABOUT, then choose FAQ, and scroll to the question about "level page" for a full explanation.

We try to protect members from scammers. I just had one and now will message at higher levels to protect myself.. Level 5 tells me they went through time and effort to be here and are sincere.

Apparently, the more active you are by posting, responding, etc., the more points you acquire. The higher your level, the more "stuff" you can see and do? I don't know the algorithm, but it feels a little like Amway for atheists. Perhaps it's effective at minimizing trolling and bot activity? By the way, you earned points for posting, and I earned points by responding! Yay us!