I just stumbled across this site the other day. I'm really digging the site.
The thing that is frustrating me the most is that there is no sort\filter.
I want to be able to only look at the rares on people's trade lists.
It would also be nice to look at cards from a specific edition (set).
Also the matching feature is ignoring what edition the card is from.
Example I listed some foil basic lands from Ravnica and it matched me to people looking for Unglued lands.
Keep up the good work.