I wish it wasn't invitation only. Yes, I know, you've made it easy to obtain an invitation. Still, why bother? For a while, I signed up for lots of "invite me when we're ready" startups. I rarely ever heard back from them, so now I don't really want to waste my time with that anymore. And every email-address I give away will eventually yield more spam (at least with a certain likelihood).
Okay ... we've listened to our users on this one (other people said similar things :-), and now http://micropledge.com/ is as open as it'll ever be.
I know what you mean about not hearing back about invites -- we aimed to reply to each one with an invite code ASAP. We debated the invite issue. Our thought was that we don't want too much happening too fast in case there are problems. But having the invites caused more problems, I think.
So my advice: don't do invites -- they complicate things and confuse people. Just hold back on the PR if you're worried.
Just a couple of notes about this pre-launch (yes, our help's too long/complex, and we'll address these things soon :-).
1) The money's real money. You can deposit (from PayPal), pledge, get paid, and withdraw (via PayPal). All real dollars.
2) If you've got projects you've already mostly finished, you can easily start a project as sole developer. If you just want a simple donations-only project, type in $0 for the quote amount after you've created it (it shows you how). Yes, we know this is klunky -- fix coming soon. :-)
