hey guys does anybody out there have an idea how to implement a rating system, lets say I have a website posting different products, and I want to allow the users to rate the products, but want the ratings to be real( want to avoid the same user voting for the same product more than once), my first thought was to put cookies in the users machines, but this is not a reliable way to do this because the can erase the cookie and vote for the same product as many times as they want, then I thought about keeping a look up data base,
id product_id ip_address
this way I will know if the user from ip_address \'A\' have voted for the product \'w2\', so this will take the problem from the client site to the server site, but again this is not either a reliable way, because most people do not have fixed IP addresses, all the dial up services assign IP address in a dynamic way.
Does anybody have an idea how to solve this problem. Thanks sanddy
