Here's a thought. Perhaps it's just read and there's no real need to comment on it? For example, you post stuff in the Models and Figures thread, perhaps details on a new figures coming out or whatever. Sometimes nothing really needs to be said on the subject if the information is all there.
And no one said this place makes you bitchy. It's just that you complain. A LOT. This is not a "lately I've just been really salty" situation. You post your complaints and then when people give you viable advice on how to help, it's either ignored or [insert random excuse here]'d away. Which means that you're really just coming here to vent, which is fine every once in a while. Everyone here has crap they deal with in reality and use this place as an escape.
But with you it's almost all the time and it's tiring. It's especially tiring when you're complaining about stuff on the forum that, for all intents and purposes, no one here is in a real position to fix or nobody really cares about. I'm not saying you're unwelcome or that you shouldn't vent every so often. I think what I and Sakura are saying is that it'd be nice if you just turn it down a notch.