I have the help of a couple trusty programs I've written in Excel to help sort and match. There's a macro that filters through all of the offers and all of the prompts and gives people who may be difficult to match a little flag for me to see (for example, someone who only offers 2 or 3 fandoms, only offers small fandoms, has only asked for small fandoms, etc), and then there's a gigantic macro that helps me with matching. Basically I input the fandoms for each prompt, mark whether the prompts are M/M, M/F, F/F/F, whatever, mark the media preferences, and hit "go" -- the program filters through everyone and spits me out a list with the "best" matches at the top. I still have to go through by hand and make sure the Preferences match - there are just too many characters, kinks, variables in FF fandom to program that! - but Excel helps me do a lot of the work.