CAPTCHA : Completely Automated Public Turing test to tell Computers and Humans Apart

Bots have been developed to automatically perform illegitimate transactions over the Web, including overloading online opinion polls, performing dictionary attacks to find names and passwords as well as grabbing thousands of free e-mail accounts for sending spam. CAPTCHAS can be used to prevent such transactions as they ensure that a real person made the transaction.    [...]

Protect Email from SPAM!

If you’d like to display your email address within your web pages, but are afraid it will be harvested by Spam robots,  you can protect yourself.

Ensure Frame (Javascript)

This code is useful if you want your framed pages to breakout with your main frame page.