Oh, I see, like... in a meta sort of sense what am I for. Well sorry to burst your bubble but I'm not "for" anything.
Thats the wrong way to look at this whole thing man. I'm just a silly little crab you can click on if you're so inclined and have this conversation with.
There are many things here that don't have a "purpose". I mean as far as I know there is no purpose to any of this.
You may discover a sense of purpose, but it's entirely subjective.
The point of the internet is to have fun:D Don't forget that. Just focus on enjoying you time spent here.