I too am an "East Coast guy," and I saw your original post when it went up on the New England based website in question. I've only been playing disc golf for about six months, but I'm registered and post occaisionaly(sp?) on that site and this one, so I'll share my observations on what happened over there.
Before even factoring disc golf, or where any particular group of people prefer to buy discs, into the equation, let's start with the fact that you posted a commercial advertisement on a general discussion message board. In order to navigate from the XXXX.com home page to the message board, you would have had to scroll down the menu on the left side of the page, right past an unmistakeable, brightly lettered banner that reads "Want to advertise on XXXX.com? Click here!" If you had in fact clicked there, you would have read that XXXX.com offers advertising space on its home page at rates of $150 for six months, $300 for a full year. Rather than go that route, you registered for the message board for the sole purpose of posting an advertisement for your "Online Gateway Disc Sports Retail Shop." That's called spamming, and it's offensive to both the proprietor of the website, who uses advertising revenue to help defray operating costs; and to members of the discussion board, who rightfully feel that the community they have helped build is being exploited by outside interests.
Moving beyond the seemingly obvious fact that spamming a message board is guaranteed to generate animosity, let's consider that XXXX.com is not a commercial enterprise. Rather, it is the internet home of the regional governing body for disc golf in New England. Again, you could have clicked a link in the menu on the left that would have led you to this group's mission statement, which reads in part: "The goal . . . is to promote the growth of disc golf . . . in and around New England." In pursuit of this goal the organization sponsors tournaments, players, and courses, runs an annual points championship, etc. Any money that they bring in via dues, donations, or website advertising goes to those activities. In your post here you suggest that your advertisement on XXXX.com's message board was "kind of like" selling discs out of the trunk of your car. A more accurate analogy would be that spamming XXXX.com for your own personal profit is like driving to a different state, pulling in to the parking lot of a course where a tournament is being held, and opening your trunk next to the tent where the host organization is selling fundraising discs.
But let's not get hung up on fundraising. I disagree with Roadkill above when he says that "East Coast guys" shun for-profit retailers. I am not a member of the organization whose message board you spammed, and I've never purchased a fundraiser disc. Of the thirty or so discs I've bought, about half have come from Play it Again, because there is one convenient to my work, and the other half have come from the well known New England retailer whose advertisement (paid for) is prominently displayed on the XXXX.com homepage. I don't buy from them because they support the local organization, I buy from them for their selection, prices, fast shipping, etc. That being said, it's worth noting how this outfit got where they are today. They started selling discs in the '80s, built two courses on their own land, and host the premier tournament in New England. In short, they've paid their dues, both business-wise and in the disc golf community, where they are rightfully considered leaders. To offer another analogy, spamming a website where these guys pay for a legitimate ad is like driving to their store, opening your trunk, and expecting the customers that their years of work have generated to buy your discs.
You asked for opinions, Jw4412, so here's mine: get a clue. If you had made more than the bare minimum investment of time and effort in researching your business venture, you could have easily uncovered all of the above information, and realized that posting an ad on the XXXX.com message board was likely to generate negative publicity for you and your supplier. Instead, you did it the lazy way with a google search and some spam, and then came here to waste more people's time and bandwidth asking them to explain the obvious.