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.
I think the word of the mouth is an amazing way to spread the app. Also the itunes etc works a lot. There is a lot of affect of the iTunes review as well, it helps a lot in boosting the sale of the app, however in certain cases the rest of the methods like advertisement through Google Ads etc and pushing the apps official website is a good way to go for!