You’ve likely seen Plus-Boxes in Google search results. They are little boxes which sometimes appear below a search result listing, and when clicked they expand the listing, allowing more info to be displayed, such as a small map or a stock chart.
For many webmasters, the question of whether a Map Plus-Box appears for a page about a location, such as for local businesses, appears to be decided very arbitrarily. Some pages with local addresses on them have the Plus-Box treatment occur, while others do not.
There are a few ways to increase the chances that Google will be able to successfully interpret the location information appearing on a webpage, so that they can pinpoint it on a map. (more…)