I may not have a huge number of posts under my belt, but I've been around for a while, I lurked for years before registering, and even then I didn't post often until recently. I know I didn't feel very welcome when I first started posting because what I jumped into quickly became a flame war, but I realized that this place is still a lot better than other places on the web and I stuck around.
My post count may be fairly low, but that's because I normally only post when I have something important to say, not because I fell off the turnip truck yesterday. Post count isn't a universal detector of relevancy or skill, just a rough gauge to detect experienced posters who have managed not to get banned and who obviously aren't newbies. The ENWorld boards are downright warm and fuzzy compared to a lot of places out there. Sometimes I get spoiled on it. I may not be a "regular", but I like to think that I'm not ignored, since I've started a few threads, and they get answers when I ask questions or make statement (most of the time, I never did get a reply on why my account was never activated when I purchased a CS account, $12.50 down the toilet).
Oh, and the whole loose/lose, teh/the, and rogue/rouge things set me off too, I've had to bite my tongue to avoid flaming people over those. It's basic English, and if you grew up in the USA, Canada, Australia, UK or any other English speaking nation you really should know this by the time you're playing D&D and online. I'll forgive non-native speakers plenty of mistakes since I know my own Japanese and Spanish aren't exactly perfect (being the two foriegn languages I have at least some understanding of), although I notice that non-native English speakers often have better grammar and spelling than some native speakers I've seen. I give my deep respect to those who have learned English as a second language and have taken the time and effort to learn it better than some who use it as a first language.