I was able to easily install bigo and this module and it did indeed work, but it's basically useless. I created a menu as the instructions say and then associated an article with the menu. When a user clicks on the menu, the captcha works great, BUT if a user goes directly to the underlying URL they can access it no problem. I need a captcha utility that will lock an article down regardless of how the user accesses it, menu or direct.

Initially i installed it to have a working capcha for yvComment because their link to the plugin showed it was removed because of bad links.

This is a Good Component and the Bigo CAPTCHA that is shown in the link above works well on its own as well as with this Component.

I tried most of the extensions here and found them to be difficult to install and in the end, not very effective and quite ugly. This extension installed easily without any hassles and has been running effectively on various sites of mine now for about 3 weeks. Since then the spam has been completely eliminated from my sites and I've been able to customise it and tailor it to suite the varying needs of my members and visitors.

Support is good and at $10 (multiple licence) is a small amount of money well spent.