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 used iSpreadNews and have to say that they got me some reviews. They don't write your message for you so if your pitch is crappy, you'll get no responses, but mine was good enough to gather some interest from media and about two dozens of reviews. In retrospect I think that the time that I would have to waste to reach 400 journalists would be worth much much more that the 160$ i paid them (him?). And, you can add every journalist that responded to your own mailing list, so in time you can entirely stop paying.
I can not tell much about Essential App Marketing, besides the fact that I sent them two or three messages asking about their service and if they think my app would benefit from it but they did not even bother to reply. So yeah quite unprofessional, they could at least send "sorry your app is ...., we don't want it". I guess they don't want my money.