Third Party websites

Blizzard, are you guys going to do anything about the sheer number of third-party sites flooding the games?

The biggest reason why these sites exist and have such huge succes is the fact that blizzard never made it easy to trade ingame or created their own trade site. I play alot of Path of Exile beside playing D2R and this problem is almost non existing in PoE because of the way they made ingame trading easy and created a really good trade site. Trading ingame in D2R however is tedious at best and rely on making a game with a name and description of the item u want to sell or buy and waiting for god knows how long before someone actually joins or responds.