One thing that many people forget is that, in many cases, your business ultimately is a local business in the online space. Unless you are a pure online play people expect something more than just the usual e-mail dance to have contact. Many times, I use the example of IBM. Sure it’s a corporate behemoth but if you search for IBM with a local qualifier in Google there is likely to be a place page for a location if it exists in that city. IBM a local company? C’mon! Well, in a way yes.
A leading local Internet authority, Mike Blumenthal, has put together a VERY comprehensive infographic about the local presence and how search and social play together to form it.