Is is allowed to create a Google+ business account for an online only website? Seems like the goal behind Google+ is for businesses with an actual local store location. I only have a website and want to keep my physical location private. Any advice if Google+ is for me or not?
It is not a good idea. It is an unnatural behavior that may affect your site adversely. I would advise to have an office location especially if you are selling something and verify it on Google+. It will be useful for you only.