I took advice from a coiner before this is what they told me....go here http://www.geocoincollection.com/cointrade/default.asp
type in the name of the coin you have/looking for....you will see who has it, whos seeking it, and whos trading click on whos seeking it if there are 10 or more people looking for the coin it "might" be considered a HTF coin...if you see a list as long as your arm consider it HTF lol
hope that helps you some
gl with your trade
TWP