I like hidden-captcha a lot. It's invisible to visitors but is pretty
effective against bots. I have one bot a day that gets through.
I've also added a mandatory profile question. The label on mine just
says "say something so i know you're real". The bots insert junk.
If you have a commercial site, CDN and DDoS blocking services like
Cloudflare and DosArrest block bots because the bots don't have the same
connection signature. Plus you get the performance upgrades of a CDN and
site monitoring.
--
-Don Pickerel-
Fane Software
I am working on a new site (Drupal 7) and I have reCaptcha module
installed which includes the image captcha as well. This still isn't
keeping out the gnats trying to get logins. I have the site set that all
new users need to verified with a valid email and the admin needs to
authorize the new user but it still hasn't stopped them. I am looking
for other ideas where I can limit these issues. I am getting about 15 a
day and they seem to be growing.
I have a few mandatory fields setup but I don't want to make it totally
a pain for new users to put in the valid info.
This might be just a cost of having the thing open for new users but if
anyone can give me some other ideas on how to stem the tide I would
appreciate it.
Thanks in advance.
--
John J. Boris, Sr.
Online Services
www.onlinesvc.com
http://www.onlinesvc.com