I see what you're saying, and I do think that this has been talked about before. And, of course, I don't mean to be rude, but if you wish to receive more compliments or get asked a question, do the same to other people! If you (or any of the other people who feel left out) were to post on the questions and compliment thread, complimenting other people or answering/asking other questions, I for one would notice and start trying to include you more. Sorry, I'm losing my train of thought here, umm. What I'm trying to say is: If you let it be known that you wish to be asked a question/complimented, you will. :) But if you're just hovering around in the background, not saying anything, there's definitely far less of a chance that people notice, "Hey, [name] is answering everybody else's questions and not getting asked any themselves. I'll go ask them something." 

And as for the matter of posting on threads and such, I'm not sure what to say. I, myself, haven't noticed that it's such a big problem. If people don't find a thread interesting and don't post on it enough, what are we supposed to do about it? It's a bit of a gamble, really, when you post something on the CB (or any other online forum). People could be enthralled, or they could find it not very interesting.