It depends on the legal jurisdiction but in the US you're allowed to use a competitor's brand name/trademark specifically to inform your customers. E.g. "acetaminophen, the stuff that's in Tylenol". You can also use the competitor's brand colors.
so if I create a website called other-Facebook.com that looks exactly like Facebook, I can even tell people I'm going to steal their time and information just like the real Facebook, and that's allowed?
