Akismet is an anti-spam service for blogs, forums etc. to validate whether a post is web-spam or not.
- Error message - The message to display next to the element if the validation fails. This text should explain why the validation failed and what steps the user should take to remedy the error.
- Condition - A PHP expression which if returns false, means that the validation is not run. See here for more information.
- Askimet Key - Your askimet account key which you can get by signing up here http://akismet.com/