So what's the purpose of restricting the time? Is it because the competition is only valid at that time? Would a valid customer not do the competition outside of that timeframe?
I would say you should give each sent out email a encoded serial number in the URL and record when that user's serial has already been in the competition. That way you can't post that URL to message boards and have bunch of anonymous unrelated people hitting the competition. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| 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:309208 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
