First of all multiple resubmissions of the same URL only accomplish one thing: They delay the review process because editors spend their time deleting duplicates and moving to most appropriate categories. So you may be fighting a losing battle with yourself.
The above being said, have you ever bothered to go to the appropriate forum thread and properly format a status request to find out what is going on with your suggestion? Not under your current nic, so either the answer is no or you have changed your nic for some unknow reason.
Before accusing editors of being biased, you might want to check and see what is going on with your suggestion(s).
Also keep in mind that there is no guarantee that any suggested site will ever be listed.
Just my (biased)