uh, I'm not a member of that forum, but, why would someone just randomly give you an invite because you ask for it? What's the upside for the sonsivri member to help you out?
Absolutely. I'm fortunate enough to be a member of that forum. I'm not as active as I would like (or possibly should be) - But I would not jeopardise my reputation there by inviting someone I know nothing about.