Signature around forums and communities influence user in many different aspects, one of the most important one would be encourage the viewers to click the link in the signature(Ad!). I believe the 5% of my click in forums are on signatures, especially when the post is wonderfully forged. Usually the link that suppose to promise a land of
artistic web page pursuit me to say "WTF" and close the window, but I can't denial the signature is a great place for ad placement.

The signature have some limitations restrict the possibility of signature ads. Most signatures are forum signatures, it rarely, if ever, allows HTML, JavaScript or Flash to be embedded, which makes signature fairly static because no outside information can be retrieved except images.

For all ads program, you have to know what ad interests and encourage the user to click, then redirect the user to what ad was about. If there is only one ad, you can be sure where to redirect because there is only one choice, but why develop a ad system that show only one ad?

Suppose there are different ads and it keeps rotates when a event is occurred. Click it and direct the user to the URL corresponds to the right ad will be the problem. But I just got the idea to develop the perfect ad.

The HTTP referral is what we would want to use to indicate the user. Each page, there will be a ad showing randomly, the database will store what ad was shown in the HTTP referral. When the URL is clicked, it retrieves the URL from the database and use a header to relocate the browser.

You can download the example code down here:

Download Signature ads