Please, make sure the post is relevant, and it seems that you have issues with people supposedly speed hacking and using Kill aura. However, you can always poke a moderator on Teamspeak, or even private message them through the forums. Otherwise, it is best recommended to collect evidence and report it in the report abuse section, which is found here:
http://www.minecraftsurvivalgames.com/forums/Report/
Just remember to follow the format, which is here:
http://www.minecraftsurvivalgames.com/threads/report-abuse-templates.6742/
Just remember, please make sure that your post is relevant, and make sure that it has some valid points, have a nice day!
I request a lock to any moderators now.