UBB.threads PHP Forum Software Community Forums Resources and Customizing Admin Zone Influx of spam registrations

To combat spam sign-ups, would it be worthwhile to implement a delay (60 seconds?) between executing the mailer scripts for new registrations?

I've been running the "StopForumSpam" mod on a few sites since October 2011 (now built in to UBBT v7.5.8). I haven't seen much/any spammers since then.

EDIT: I'm also set to "fail silently at register", as SD mentioned above.