Sources familiar with the matter confirm that David Perez, who’s spent the last six months as creative recruiter at AKQA’s San Francisco office, is leaving the agency. Perez, who joined AKQA this past April after a five-year stint in the same position at Leo Burnett/Lapiz, is perhaps better known as @DavidOnDemand, the now-defunct handle he once assumed that garnered his 15 minutes of fame prior to Cannes 2010. AKQA would not comment on Perez’s departure, but from what we’ve been told by sources, the former Twitter serf/Chicago native has given notice and is heading into freelance territory. No timetable, though, has been set for his official departure from AKQA.