Some posts dont get answered, I am surprised that some dont but, I have learned not to get paranoic about that. Not everyone has some thing to say on a subject and I only answer a few posts. As to spelling, forget it, as long as they are understandable is all that matters. I am not a good speller and I make typing errors or just bad grammer. And lack of politeness is often just being in hurry, not being ignorant; I am sure it is the same for everyone else.
As to lack of posters, just try to post at least one post a day, that would help. Doesnt matter how inane it is, some of mine are pretty much so but, if every one did that it might attract more posters and new members in time.