You know Doug, I kinda know what you are saying. And it's a good thing you posted what you did, because some of us don't think about where you or other people who feel like "outsiders" are coming from, or that you even feel that way! But there's nothing that makes me, or anyone, part of a higher caste than anyone else here, except we might be above Kent and Mike because of their love of Macs.
Seriously though, when I first joined the AOPA board way back when it was yellow, (2003/2004 maybe) I pretty much just read post and said nothing because I felt kinda the same way. I forget exactly when I first stumbled on the AOPA board, but I was just like you say how you feel - I felt like I wasn't "qualified" to say anything. I even got "yelled at" by Ron Levy for answering someone's question about IR training wrong when I was an instrument student and I thought I knew the answer to the question since I was going through all that at the time. Actually, I never thanked him for it, but that's what really got me to read the FARs over and over and over, and really get to know them, but I digress. The point is, on a message board, you are really going to have to just butt in, and be heard, or else it's really hard to feel part of this community. You don't have to be a professional antagonist like yours truly, or have a condition known as post-itis like Scott Migaldi, or be an authority on anything like, well, me again.
(Actually, I'm not, I just stayed at a Holiday Inn Express - no wait I didn't do that either - maybe I am.)
But really, you just have to be you. But you have to be vocal, or typal, or whatever term it is that makes it so we can get to know you, and anyone else who might feel "lower ranked." Everyone here has something to contribute regardless of experience - aviation or otherwise. The only reason that some of us might appear to be "upper crust" is because really we're just a bunch of blathering idiots with ego complexes that need to see a bunch of words tied to our name, and can't shut up. If you feel left out, butt in!
You are right, there might be a slight stratification, but it's completely unintentional. So, how did I get to be so notorious, other than being one of those blathering idiots who likes to see a bunch of text tied to my name? Blame Adam Zucker for it. Why him? Cause he's a lawyer. No, not really. Blame him for hosting Wings. Even when this board was started when the old AOPA board was taken down, I didn't say a whole heck of a lot on here, and I didn't really feel part of the "in-crowd" until the first Wings Fly B Q. And even when I went to that I was hesitant about going because I was not going to know anyone there! Actually, I was going to know one person there, because I had met Kath in February when she was in the Midwest. But for the most part I was going to be one of the outsiders, and no one but Adam knew I was coming. But as soon as I got there, it was not the case. Ron and Toby were the first to say hello and Ed Guthrie opened up his house for me to stay at, even though I don't think I ever talked directly to him on the board.
After that we all had a slightly closer tie. We had a handshake, or a smile, or a laugh to put with that stranger sitting on the other side of the monitor. And yeah, that can cause a stratification of sorts on the board, but it's certainly not because we feel that you aren't worthy to be here, or that you don't have anything to offer, because everyone here should be here. Hell, there's people that aren't here that should be here. That stratification is only there because a lot of us have a personal connection to others on the board. Me probably moreso than anyone having been to 3 Gaston's, 3 Wings, and 2 of my own hosted fly ins. But whether we've met you in person or not Doug, just jump in. Join the throngs of blathering idiots, we need more of us. And make it to Wings next May, it will change you forever.
Edit: I just saw your sig. I have 0 logged tailwheel or aerobatics time. You are more of an authority on that than I am!