Mara Liasson, filling in this week as NPR's Mixed Signals blogger, says she was "jolted" by a MasterCard ad — uh, underwriting credit — packaged with the web-only All Songs Considered.

WUNC-FM in Chapel Hill, N.C., is aiming to expand its presence in nearby Greensboro, a move which could increase competition with WFDD-FM in Winston-Salem, reports the Triad Business Journal. Jay Banks, WFDD's g.m., calls the prospect "frightening."