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Oct 29, 2013, 01:32 #1
Is there any algorithm to make some ad display at random more often than others
I have a table of advertisement with expiry date and location. Currently, I display ad at random base on userís location.
In the near future, I want to add tier system in to my ad sale. It means the first tier ad should be displayed more often than the second tier, but I donít know how to control that.
Is there any existing solution for my problem?