Help about SPAM

[webn]

Hello

I want to know detail about spam, spam filter. Sometiomes we see in registration form something bizzerre text and mention it to write in the box.They called it spam filter. Is it GD generated? How can I generate it ? Use it?

Please inform me detail.

[Weedpacket]

The word you want to google for is "CAPTCHA".

[MarkR]

Please do not use a CAPTCHA unless it becomes COMPLETELY NECESSARY. They're incredibly annoying.

Mark