Street Fight Daily: NextDoor Raises $18.6M, YP Freshens Site

A roundup of today’s big stories in hyperlocal content, commerce, and technology.NextDoor, the Social Network for Neighborhoods, Raises $18.6M (GigaOm)… YP.com Freshens Up Homepage, Creates Higher Expectations for the Inside (Screenwerk)… Reinventing the Billboard (Inc.)…