If you’re going through the trouble of solving an audio captcha, a 30 second delay isn’t going to bother you. Remember that the whole trick of a spammer is tha

If you’re going through the trouble of solving an audio captcha, a 30 second delay isn’t going to bother you. Remember that the whole trick of a spammer is that you aren’t able to see that his many actions are coming from one source. Otherwise it would be trivial to block. So there’s not a lot stopping a spammer from running many 30 second delays in parallel.