@christin@lsbt.me FYI we saw one (just one, interestingly) of these signups reference sendflood [ dot ] com which appears to be a "we'll flood someone's inbox for you for pay" kind of malicious site, which is even ickier than the other thoughts I've seen about what it might be. We've closed registrations entirely right now to avoid being an amplification vector, this looks to be a potential nasty arms race. :(