Please do not post the same thing multiple times. The board software automatically flags certain posts as needing moderator attention. This happens the most often for new users. I'm pretty sure this is made clear at the time you attempt to post. Posting the same thing over and over again just makes that many more posts the moderators have to weed through later. This makes us sad. Don't make us sad. If your post/thread doesn't appear, just wait a while. Don't post it again. If it hasn't shown up by the next day, then you can try again. I normally go through posts in the mornings, and try to check a few times throughout the day, but I'm not here 24/7. There will typically be a significant delay before posts are approved. Just be patient.
We can complain about many things (and I do) but not Apple's 30% cut. If it accounted for any significant part of their revenue, we would have already seen it go the other way and increase.
Try selling software the normal way or writing a book through a publishing company, you won't see much of the final sale price. For a $10 book, you'll be very very luck to even get $1.