I've been looking at the card database and found how I can learn which other players have specific cards. When I click through to them, however, I can see which player have specific cards, but all those I've checked so far have them in inventory and not on their tradelist. This makes searching for available cards a bit tedious.

It would be nice to be able to search all active tradelists for cards. Just the tradelists, not the entire database.

Including some search options would be helpful, too:
- trade type (available -or- wanted)
- include or exclude locations (e.g., by country, by state)
- advanced card features (e.g., foil, version, condition, language)

And, of course, top it all off with a link to let you notify the player that you'd like to commence a trade.

On the page for each card, you can specify that you want to see each user with that card in their tradelist (default), inventory, or wishlist. I believe it defaults to list those where your and the potential tradee's trade radius both match.