http://www.simplemachines.org/community/index.php?topic=377031.0
I was getting several a day. Plus a bunch of bandwidth wasting hits on my site.
I have not seen a fake spam account for several moths and now my bandwidth is under control.
Besides blocking all Countries that are not in my target area I have the following spam prevention installed:
old version of crawlprotect -- custom edit by me
Bad Behavior -- strict mode
httpBL "Honey pot" -- 45/10/30
Stop Spammer
Avatar Verification -- over 100 images
http://wiki.simplemachines.org/smf/Spam_-_my_forum_is_flooded_with_spam,_what_can_I_do
Mods to Prevent Spam
One of the most important SMF features is its ability to be modified, and at the mod site there is an entire category dedicated to Spam Prevention mods.
Some examples of very clever anti-spam mods that have been created by our community are (in alphabetical order):
Bad Behavior
Forum Firewall
httpBL
Misc Anti Spam
Stop Forum Spam
Stop Spammer
http://www.simplemachines.org/community/index.php?topic=413519.0 (http://www.simplemachines.org/community/index.php?topic=413519.0)
We have made some updates to the forum configuration and enabled user registration using verified email or OpenID. Hope it would benefit the visitors in posting to the forum, and reduce spam at the same time. Will be updating now and then on the results.