Be cautious. Things are not always what they appear. There have been a couple of folks that
I was certain were a dealer de facto. I was wrong. (Wouldn't be the first time - just ask my wife.) While it may seem someone only spends time on the Exchange to list a blade, there may be extenuating circumstances and they are very much involved in the forum but just not posting often - due to those same circumstances.
There are
many, many, many Busse sub-forum threads about what we do and do not like about the "dealers," more commonly here "flippers."
ITrader is just another tool in the arsenal of "do I trust this person with my INFI/cash." So is searching TGB&U. One other way used to be the Hog status: if someone had been here long enough to make it to Blade, etc., then they were probably invested enough in the community to be trusted. Conditionally, another may be time spent here.
Here's how I see it when making a trade/sell/purchase. If I am wary of someone, it is typically because of one of the following:
1) You're new... very new. Sorry, I'm gonna be cautious about trusting you with my cash or INFI.
2) You're a nut. Who might that be? They may have thousands of posts, they may have been here for umpteen years, they may be a HOG (or iHog,) they might even have hundreds

of positive iTrades.
Either way... still a *$@& nut.
You'll be the one on TGB&U knee-jerk screaming if the blade is one day later than you expected, maybe taking the persona too seriously, or flipping your lid because there is a "typical" Busse manufacturing characteristic that you perceive as some huge flaw that you should have been informed about beforehand. You're the one who gets buyer's remorse that you spent $500 on a blade and now look for some reason,
any reason, to blame the seller and get out of it. In general, you'll behave like a nut.
There's great people here... even Bravado.

(I wuv u, man!) There's also folks who, at first glance, would fit the criteria of being great. High posts, longevity, high iTrade, HOG, etc.
I say to you,
Judge ye not, the Hog by the numbers! Judge him by his character! He of poor character will out himself in time.
.