Quote from Shad3slayer
"Why is everyone mentioning d2jsp? Chances are it won't be meaningful at all. Purely due to the law of big numbers. Most people will probably prefer to trade in games/ trade hubs/ chats/ whatever we get in-game, as opposed to refreshing forums, dealing with possible scams etc etc. So chances are a very small chunk of people will use d2jsp, mostly the ones that already do, and the much larger majority will just trade in game."
Translation: I won't use d2jsp therefore nobody else will use d2jsp.