From what little I've seen, it's entirely "Me" focused.
Well ....errmm; Yes it would be. That is the raison d'etre of Facebook, it is there for PEOPLE to communicate with other PEOPLE and tell them about THEMSELVE'S. (ie; Social interaction)
It is absolutely nothing at all to do with SEO, YOU (the person) may communicate with other people, either individually or collectively ( ie; a Social group) and tell them about your business IF THEY ARE INTERESTED in that aspect of your PERSONAL life.
Facebook IS essentially a personal 'profile' the fact that they have little or no measure that prevent it being thoroughly abused by so-called SEOs and marketers is purely coincidental.
Google+ will not let you create a full profile if their username analysis algorithm considers the name you intend to use is one for a commercial purpose rather than personal use. So if your surname actually is "Support" don't bother with Google+
To create a business profile rather than a personal profile you have to use this http://www.google.com/+/business/ instead.
Google may just have the right idea, which could well mean that they may outlive Facebook. By keeping personal and business operations separate, they avoid the trap that could make the personal aspect of Google Plus unusable because of the marketers abusing it.
I use Facebook to 'talk' to real friends and family who are spread far and wide and these are people that I actually do know, some are ones I have not met in person but am happy to class them as 'friends'. It's the 21st Century equivalent of a 'pen-pal'.
If your business has a 'social' aspect ie; something that MANY people share a common interest in, then Facebook could be very useful as a tool for keeping in touch and getting YOUR expertise and interests known more widely (promotion not 'optimising'), simply because people who are 'into' [whatever] know other people who are 'into' the same things and will tell them about a new source of products or information.
If your business is 'B2B' orientated then your FaceBook attempt will most likely be a complete flop because it is simply not interesting enough for facebook users to recommend to their 'friends'
Rule 101 of the Ferengi rules of aquisition;
Know how your interested your buyers will be in the item before you aquire it.
So to apply that to 'social' sites:
There is no profit in telling people about your products or service if they are not really intereted in finding it on Facebook.
REAL people go to car boot sales (or eBay) hoping to find a bargain.
REAL people go to Facebook to 'kill time' or talk to friends, they do NOT go there looking for a tax accountant, legal advice or to buy a used car.