BlankSlate announced today at the Street Fight Summit in NYC that is has signed Prince of Petworth to its customer list. Prince of Petworth is a blog that has grown to one of DC’s largest. BlankSlate will add its real estate listings marketplace, classifieds, business directory, community calendar, and community forum products to Prince of Petworth turning it from a WordPress blog to a complete local site for the DC area. BlankSlate will also handle ad sales, bringing Prince of Petworth in to BlankSlate’s ad network.

BlankSlate’s local technology and sales solution was launched in April 2011 when it signed its first customer, the leading Brooklyn blog Brownstoner. Brownstoner was launched more than seven years ago, and generates more traffic than all of Brooklyn’s local newspapers combined. BlankSlate has grown Brownstoner’s advertiser count to more than 400, with solutions for advertisers starting at only $24.95 per month.

Says BlankSlate’s CEO and Founder Kael Goodman: “We’re thrilled at how well Brownstoner has done and we’re sure Prince of Petworth will do just as well. We think our approach of providing the technology and ad sales allows bloggers to do what they love – write and engage with people in the community. We’ll be announcing additional customers soon too.”

Says Dan Silverman, Prince of Petworth’s publisher: “I’m super excited to be working with Blankslate.  I’ve already transitioned my advertisers and am looking forward to the site’s new capabilities with the November re-launch.  What started as a hobby five years ago has exceeded all expectations – I can’t wait to see where the next five years takes it with Blankslate as a partner.