Not bad, but it doesn't seem to me that such a bot can grow.

Let's say I put 100 SP in it. It will give 3-4 cents per post, which is not too big of an exposure. It will need to grow, and I doubt that a lot of people will help it out without gaining anything themselves.

If I put 10'000 SP it will be much more effective, but I don't have that much money hanging around. Also - even if I did - I wouldn't put them to charity.
I'd want profit.