10 Must-Have Blog Techniques
Stop spam with (re)Captcha.
Captcha is the tool that asks users to type in a set of letters or numbers before submitting a form. This tool is now available as a plugin for websites and blogs. (re)Captcha is captcha with a conscience. While commenters are typing in the confirmation text, they are also helping to decipher text from very old books being saved by digitizing them. If you allow comments on your blog, you will definitely want some sort of spam defense. Even though it will not eliminate all comment spam it will help A LOT.