Built on top of Google Places, Boost is a geo-targetted-based ad product for local businesses. This has only been launched in some beta cities, Chicago, San Francisco, and Houston to be exact, but looks to expand shortly.
In essence, the top area of the search results which displayed a series of PPC listings, now, there will be one that will reflect an map icon with a different color than the rest of the pinpoints on a Google Map list.
The article has a great illustration of looking for an Asian Restaurant near San Francisco. In the sponsored link area, instead of showing standard text ads, now the bottom one will contain the restaurant information, description, reviews, and a different color pin point.
This one pin point will stand out on the local business results map displayed in standard google searches.
For local business who want to stand out, this is a great opportunity to stand out. And one can only assume these are highly qualified and motivated leads.
Looking at this differently, this is definitely an attack against Facebook Places and what can only be assumed their soon-to-be live geo-targeted advertising of local places and businesses.
To read the entire Mashable.com article: "Google Gives Local Businesses an Advertising Boost"