# of committed users (spearks + staff + who bought tickets) is currently 343 as of this writing. We set that limit to 350 in the system. We'll close new registration when we hit that limit.
People who registered but hasn't made a payment yet should do it right now. We'll accept the payment for a few days even after we close the registration, but it won't be that long.
To rephrase, make a payment right now. If you don't have a credit card, send us a note (email to email@example.com).