I don't consider people on here friends, considering I've met them through a computer screen. Although there are a few people on here that I believe could be good フレンズ if I actually met them in person.
There are people I haven't had problems with and people I have had little quarrels with, but no フレンズ and enemies. I don't know who these people really are, so there's no point in characterizing them as フレンズ または enemies when they could be totally different than what あなた judge them for online.