If you're looking for posts to become staff, making random posts isn't really the way to go...
Good ways to boost your posts are to comment on staff apps or posts in general/off topic discussion as well as any of the forums games or even creating a post of your own like many other people do. It shows your investment in the forums and want for staff, as well as meeting the requirement of helpful and informative posts, other than just trying to boost your posts with random threads like this one. Patience is key!! Just a tip for you!
Have a lovely day and good luck on your task of acquiring useful and helpful posts!
- Cos