There is a much better solution than Webvisum and is called Captcha Monster. It works similarly to Webvisum but does all the job automatically - it will find CAPTCHA image, read the text and put it in the right field. With no interaction needed. Solving time is much shorter than in Webvisum and on average equals 9 seconds.

You don't need any invitation code to try this plugin, just visit its website: Captcha Monster (http://captchamonster.com)