I have a suggestion on the swap page. Currently there are two columns: "coins that interest you" and "coins that interest him". This is very good, but I would like to suggest another column "coins of mutual interest". The objective of this column will be to check the small number between the first two columns. This might help because sometimes there is a person that has 150 coins that I'm interested, but I only have 2 that he might be interested in. With this new column you can sort the table by "the most probable person that is interested in swapping".
This problem is already solved with the 'Your wishes' functionality. The columns 'coins that interest you' and 'coins that interest him' take each others wish list into account.