can someone please tell me?

I'm going to be attending ole miss next fall. Can somebody please tell me why KD and kappa and DG are so obsessed with this site and why they seem to always be putting other sororities down? I found this site yesterday after some girls from my scho were talking about it. We have decided that those are the three that we don't want anything to do with. I certainly don't need college drama. We get enough if that in high school! Why don't ddd and xo ever come on this site and self promote? Is it because they are so full of themselves that they don't care what others think about them? What about phi mu? I heard they were known as the sweet girls on campus. I'm guessing the better sororities don't have to brag and self promote.