Finally, a solution that WORKS!

I have tried so many solutions to cut down or eliminate the amount of spam registrations on my PR5 site, with little success. Even Cloudflare only slows it down. I was manually approving registrations and spending hours every week picking through the less-obvious registrations to determine which ones were real and which were spam, then responding to e-mails from real users who had been denied.

CleanTalk put an immediate end to all of it. And in addition, it scanned my current user list to make sure none of them had spam addresses. I paid the subscription fee after only one day of free trial. It’s that awesome.