Removing all discussions and starting again

Two things:

1. My company is about to launch and there're a few discussions from 8 months ago, when we were playing around with GS. I'm pretty sure we're going to use it for good now. But I'd like to clear the old topics, since they're using an old brand HiPPstr(*), to avoid any confusion. We'd really just like to wipe and start again.

2. I changed my title in my account, it hasn't updated on HiPPstr yet. Am I doing something wrong? Time thing?

Thanks,
Ben