Whenever somebody logs into my server, I see all of these lines that I have no use for. I know what they are for, but I don't need them clogging up console space. Is there any way I can remove this?
Instead of hiding information in the console, you could use the graphical one provided to you (minecraft_server.jar), which, as @SevenSidedDie said, removes all the clutter because it doesn't wrap lines. However, if like me, you use perimeters in a .bat file to launch it, you would want to use a file called invisible.vbs to hide the black console. It doesn't hide the graphical one because the graphical one is launched from the console.