audio mart confusions

I've been registered and happily using US Audio Mart for the last couple of years as an alternative to Audiogon. Managed to buy and sell there without a problem, though the other parties did not seem too quick to bother with feedback which might be problematic for some. Surprised I was to quickly type 'audiomart.com' into my browser and up comes that exact site, only not what I expected. Yes, there is a live Audiomart.com, but it seems newer, has far less content, and you have to register to really see the ads. Sort of confusing, can't determine exactly which name came first but in case you're interested, check out audiomart.com