So what do you guys think of it? Is it fair to get a build off the internet for anything, or is part of the challenge to make your own?

Well I do get builds off PVX and such for PvP as they are generally so much more honed and perfected than any build I will make especially for something such as GvG.

I suppose. It wouldn't really be right to have your entire team lose because of your personal convictions about something so small.