When I was first researching my tractor, and after I bought it, I was very much into the whole thing. I posted a lot, and read a lot. Eventually, I became very irratated at (mostly a few) people - both those who were new to both the board and tractors and made no attempt to either read older posts, or to spend a little time and think about what they were asking, and other posters (some prolific) who were extremely opinionated and often arrogant and offensive. Additionally, there is a certain type of person that shows up on most large boards, that think their opinion is more valuable than others purely by virture of the number of posts they make. In reality, I could post 30 times a day, and still have my head up my a$$ - and indeed I may. It is important to remember that just because someone has just made their first post does not mean they were just born. They may in fact be very knowledgable and experienced.
I realized that it was just a message board, and regardless of what someone else might think of the tractor I bought, the projects I do with it, or me personally, it didn't change the reality of my tractor, and its relationship with the rest of my life. There are an awful lot of things that are more important than this message board or any tractor. So I stopped posting for a long while. Now I only get on now and then, and don't post much. I try to give useful advice, and I don't much care who agrees with it. I find I can still post a specifc question and usually get reasonable advice. Good enough for me!
Last remeber, some of the people who pass through and are gone have simply come to the conclusion they were spending too much time on TBN. And they probely were.