I am really on the fence about whether this addition by Google will be of any use or not. Well, decided to have a play anyway (I am a tinkerer by nature). I haven't gone the business page route as I don't see that I have anything to gain by doing that but have used the page to point to some of my more in depth writing and stuff – possibly strengthening the ties between G+ and my blog.
I would be really interested to hear what others are doing, if anything, with this new toy. I mean I do have a business, a real incorporated one, but I don't really see any advantage in using the Pages for that.