In a new note from phpguru.org (Richard Heyes) today, he mentions the idea of a new website - botornot.com (taken, unfortunately) - a potential website dedicated to the promotion of CAPTCHA methods, which are, unfortunately, now so commonly necessary.

With the help of the PEAR CAPTCHA library, making these images is much simpler on the PHP community - so why don't more people use them? Is it a "don't want to bother with it" situation, or is it more of "don't want to bother my users with it" stance? It is one extra step that your users will have to go through to ultimately submit the form, but, personally, I think the security is worth it.

When creating the images is as simple as this, why not?