buckworks - 5:52 pm on Jun 26, 2010 (gmt 0)
28,000 to 100? Yikes, that would be painful!
Ranking depends on a myriad of factors, and the way they combine probably matters as much as what any particular factor happens to be. It's hazardous to point at any one thing and say "this matters most" or "that matters least".
Everything matters, including many factors we can only guess at.