I fear unpleasant experience by myself to create an account may have disappointed already a number of folks who would have otherwise be the participants.
I mean I had to pass through this bumpy Anitspam2 'please please wait 1 or 2 minutes'. I've finally made it, but it took me to iterate few times and each actually lasted more than 2 mins.
When I was struggling there was no hint or explanation displayed like it's now (when I am writing this very text) This verification will stop appearing once your account is approved.
So at least this very bare line should've been on the registration page!
And secondly, while I appreciate the idea, I am guessing it will still require a human's decision to 'approve' the likes of myself. And when that's the case, maybe it would be of the same efforts
to disapprove a new account in case it will prove spam suspicion. That is I suggest to consider to leave newly registered ones out of the '2 mins' wait for no faults of their own.