Sapient has appointed Matthew Pollock, formerly of Digitas, creative director within its experience marketing practice in Cambridge, MA. ... Anonymous Content recently announced the addition of executive producer Danielle Peretz and director of new business development Cody Allen to their Integrated division. ... Agency.com added Michael Winter, formerly of Beyond Interactive, as media director for the New York office. ... United>Future, the interactive division of Wongdoody, added Steve Karr, formerly of Notchturner, as director of client partnerships, and Christopher Adorna, formerly of AT&T/Yellowpages.com, as director of experience planning. ... Atmosphere BBDO hired David Bear, formerly of ipsh!, New York, in the new role of executive director, mobile.