Why do you read them then? Serious question.
Because the post title make it look like it may contain information about upcoming superchargers. If someone on the forum has seen a supercharger, they will post about it. I'm not aware of any posts such as yours which have resulted in someone responding "Oh, yeah, there is one being built in [town]. I've known about it for weeks but I was waiting for someone to ask before I said anything!"
The links above are also good places to check.