OPA Data Liberator: the hackathon project that fills in where city property records leave off [VIDEO] : Technically Philly : mike : Portfoli Posted on July 22, 2011 by Stephen Technically Philly OPA Data Liberator: the hackathon project that fills in where city property records leave off via OPA Data Liberator: the hackathon project that fills in where city property records leave off [VIDEO] : Technically Philly : mike : Portfoli. Share the Vacancy:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to share on Pinterest (Opens in new window)Like this:Like Loading... Related