Originally Posted by patryk
I like it!
Originally Posted by gcmax
A good idea patryk, could mean some nice extra traffic. I guess for people with screen readers you just use the alt tag instead of having to build an audio library for every captcha.
UPDATE: Just finished off the coding for it now: http://www.bellsdomestics.co.uk/blog.php
All working now so it's time for some content, then solve Google+1 and Facebook button issues and finally W3C compliance.
Other than that and interestingly I think a robot or someone messing around who has seen this thread put a spam comment in after I got recaptcha to work!! I really do hope it is a joke and not a sign of things to come because otherwise, what is the point of having a recaptcha?
Captcha's block bots, not people. There are actually people whom are paid just to post spam. Bots are much easier to write of course, and if you use common things like a vBulletin or a widely used cms than you are often targeted for the ease of automation.
There isn't a thing you can do about a human though. That's why you need to add additional spam blocking tools. For example, from what I see I delete about 20 posts per hour on average as spam. Given what it shows, those are posts and threads not seen by other users, so our new spam fighting techniques are working well. I don't mind cleaning up a few hundred junk spam that's stuck in moderation queue every day; it sure beats a few months ago when we were seeing hundreds of posts passing through queue and showing up. What a mess that was.