Hey johayrae! The site doesn't have a "purpose" per se -- it's just a place to talk about words. We're very laid-back here and a lot more fun than you'd expect a bunch of grammarians and wordinistas to be.
You can make lists of words (or phrases) and categorize them however you like... words you love, hate, words that remind you of New Zealand, whatever. :-) Check out lists made by other people, share ideas, tell jokes. Though words are our foundation we end up talking about pretty much everything eventually. It's a fun site to just dork out on.