You can go to the community 'invitecodes' and let us know how many codes you would like.

Scribbld is literally run by a tiny team and there comes a point where you have to choose the lesser of two evils and restrict account registration for a little while to cut down on spam. Otherwise there would end up being more spam accounts than legitimate users which, as well as taking up tonnes of server space, is really annoying. So yeah. I imagine jimmy et al are doing all they can.