I don't think he is is thinking of hiring someone for the purpose of signature posting. He is probably looking for ANN bumping service which has recently become a disaster in the forum.
I think yours is the closer, OP did not give us hint on why he needs someone with good English to make posts but if it is a bumping service, he better make sure the project is good enough to attract investors, some of the bumping services only create a lot of spam and meaningless post, looks like a generic post to hype a project.
