I dunno; I can't help but find them weird..

they used the card data gathered mainly by Jim Montanus - as indicated in the sheet - (and nowadays updated by me), but they credit some bloke who's prolly done nothing but point them to the file on our website.

they never bothered to check on that data and thus ended up listing cards from Hands of the Healer etc, as well as translations of German promo's as if they were really printed. People trusting the site probably end up trading for them / chasing wild geese accordingly.

I couldn't find support for editions: limited / unlimited

their list of languages doesn't match the printed cards

their list of links is a 1:1 copy from the open directory project, but they don't bother mentioning that, as the ODP no doubt requires. In fact, they'd be better of linking to it, as that would keep their links more up to date..
This is just a first glance of course, but together this to me just doesn't give the place the credibility I'd be looking for in a trade center.