To protect sites against bots, reCaptcha is surely a nice tool.
But clicking more than 3 or 4 times in one picture to reach the content is more than pain in the ass and costs an awful lot of time!
Most worse: You think you've clicked the right parts and tada! you have to solve another "pretty" image...
Horrible for people with sight problems are the changing images where you have to click multiple changing images in one reCaptcha!
Please, Google, make usoing reCaptcha easier for all! Not more than 3 or 4 clicks per captcha!