Due to massive spam in our comment functions, I decided to add a little protection against automatic comment bots. There are a lot of possible captcha implementations out there, and a lot of them just aren’t useful. However some protection is better than no protection. I’ve read an article about captchas and their strength in c’t 9/2008 and they recommended reCAPTCHA. What does it? The best way to describe it, is to let them describe their job:

To archive human knowledge and to make information more accessible to the world, multiple projects are currently digitizing physical books that were written before the computer age. The book pages are being photographically scanned, and then, to make them searchable, transformed into text using “Optical Character Recognition” (OCR). The transformation into text is useful because scanning a book produces images, which are difficult to store on small devices, expensive to download, and cannot be searched. The problem is that OCR is not perfect.

Learn more about reCAPTCHA at their info website.

You can check out the captcha system right here. Write a comment and proof that you are a human.