We think you have planned a good service here. However, to get 30SBD to create a worthy post you will have to demonstrate that content produced by your team is good.
We are willing to use your service once we see some sample posts trended by your service.
Our team is also the team that works on @KiwiBot, you can pop over there and check out some of those posts to see our writing style. This post is probably the closest example to what an advertisement post will look like - here
You can also check out my writing style specifically on this post here and our other writer's writing style on his blog @shunnedscarab55.
We have about 2-3 posts lined up for the next couple of weeks, so you can certainly wait until then to see how you like our work then!