How about doing the link as a form submission rather than a hyperlink. Then you can also pass form variables that authenticate that it is from the site and not someone spoofing the submission.
Eric /*-----Original Message----- /*From: Will Swain [mailto:[EMAIL PROTECTED] /*Sent: Thursday, July 17, 2008 4:33 AM /*To: CF-Talk /*Subject: Interesting issue with competition /* /*Morning all, /* /*This is an interesting one. I have a estate agent client who runs a /*monthly /*competition on their site - simple question with three possible answers. /* /*Anyway, they are getting 1,000's of entries a day to the competition, /*because the url for it has been posted on various competition sites. This /*is /*no good for them, and misses their point for running the competitions at /*all. So we are looking for some technical solutions. /* /*My first thought is something like this: /* /*Append an encrypted timestamp to the url of the site menu link to the /*competition page. On the competition page itself, have some code that /*decrypts the timestamp, and only allows a competition entry within a set /*time of the timestamp, say 10 minutes. This would allow people to enter /*the /*competition from the site, but clicking on a link to the page from a forum /*somewhere wouldn't work. /* /*I know it's not foolproof, but it should help. Any other ideas? /* /*Apologies for the slightly rambling post - I'm still on my first cup of /*coffee! /* /*Will Swain /*Hot Horse Ltd /* /* /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:309202 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4