Posted by Rik on 12/13/06 18:48

Kentor wrote:
> Hello, how could I limit the number of times a user uses my "tell a
> friend" form each minute? Or if anybody has a nice looking
> tell-a-friend script which prevents spam already coded, that would
> save up a little time.

You could try:
- cookies (unreliable)
- check ip (unreliable)
- use captche (unreliable AND annoying)

Unfortunately, there is no real good way to do this.
People might give you half-baked solutions. They may prevent some
spammers,l noever a 100%, and only untill the rest of the spammers picks
up.

Personally, I always advise against such a feature on a webpage.
--
Rik Wasmus

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