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I suspect that the reverse engineering the poster is trying to accomplish is to drop his competitor from 1 to 5. Question seems to be "if I don't have access to change the content or affect any of the changes you've suggested regarding uploading certain things, how do I drop the ranking of a top ranking SE result?"
Quadrille - As I already explained in my response to internetheaven I DO have access to the content and I am not trying to affect any other sites.
To paraphrase a disgraced clown..."Let me make this perfectly clear" - the site in question is my own site and I am only trying to get a better understanding of the power each tag has in relation to rankings.
The fact that the site may drop a few pages is inconsequential.
This is partly a study in what role each tag plays, their interaction together, and partly a study on subtle techniques that are not obvious to the viewer but may have profound consequences on rankings.
[edited by: Bobby at 1:12 pm (utc) on Feb. 12, 2008]