If you really want your reviews to be rated helpful, I'd suggest putting a little more effort into them. Don't just make one short sentence without any helpful feedback. Tell the author what you liked about it, what you didn't like about it, how they can make it better, and any other additional feedback you think would be useful to them. Posting a blog like this in all caps is just asking for someone to go through all your reviews and rate them all as useless.
Makaga
I don't!
Fastfly
I didn't mean YOU were flagging my reviews useless