depends on what you are posting.. most pick and choose what they want to read. So no there is nothing wrong with your posting.
Seems the only posts you've made are selling things. You've not done an intro so this keeps alot of people from responding... Do an intro. Life will be all cheery and stuff.
LOL -- I've found changing the title on a post can make all the difference. Its fun to see what titles bring what kind of response . . . look at the high hit counts and then you can get a feel for what flys and what doesn't. Seems like intrigue/ drama/ or what I've dragged home seems to do good. Tear jerkers are another. Just don't bag on someone's classified ads when a link has been posted to it. Sales are a fickle thing . . . I've advertised for months and haven't found anyone wanting my old crap . . . . er . . . Buick.