This is the third edition of the Social Media Six Pack, where we pick five Facebook Business (Fan) pages and one Posterous blog that we have been watching, and that we feel offer value to its readers. We choose locally oriented and national pages for this.

First up is someone who is influential online- both on Facebook and off. His page is chosen because of the generous spirit with which he shares tips, blogging help and tech ideas to make life simpler- and because of his sense of humor. Thanks, Joe, for Sellsius Marketing.

Red Bull has always been able to figure out how to create buzz- they are repeatedly mentioned in studies of viral or word-of-mouth marketing. This page is no different. Entertaining, and every comment sparks a fan conversation. Funny that it is categorized as a Pharmaceutical.

Fans of Apple - not an official Apple page, but a lot of fans get together here to discuss products and rumors.When is the iPad coming out? Will it make Kindle obsolete? When will Apple free the iPhone from AT&T's clutches?

Real Estate Agent Society is chock full of conversation and useful advice for real estate sales agents.

Last is a real estate page that offers hyperlocal information and a nice home search feature -Kathleen Buckley's Star Realty of Hopkinton, MA. Very good mix of real estate and non-real estate information.

The posterous of the week is a quirky photoblog by Teresa Boardman. She points out that the majority of her photos here are taken on her Blackberry- she has other photos that can be found on flickr.