Best Buy is the largest speciality retailer of consumer electronics in the United States. The company, which is based in Minnesota, has more than 150,000 employees and $40 billion in revenue.

Why it’s in the Showcase: Best Buy uses WordPress MU to power 1050 local store blogs, empowering more than 1m500 store associates to blog about store location data, events, announcements, and happenings. Using WordPress, Best Buy has been able to aggregate important store data and pass it back to key enterprise applications via custom web services. Best Buy also uses WordPress’ theme capabilities to experiment with Microformats, RDFa and RDF.

Note: The “visit site” link is an example site. More sites can be seen by changing the number in the URL. There is no central portal for all of the stores.

Digital Photography School is a website with simple tips to help digital camera owners get the most out of their cameras.

Why it’s in the Showcase: Digital Photography School is one of the most popular resources for digital photographers and is run by blogging expert Darren Rowse.