I use firefox extensions all the time, but this is the very first I've written a review for - because it is so excellent and deserving of one. There isn't much to say.. as it's self explanatory. Just enable the extension, and you very very rarely have to enter captchas again, this effect is so pronounced that you almost forget how to do CAPTCHAS entirely when you do have to. 10/10, life-changing extension, love how it's open source also - please support projects like these with donations.