NEW YORK: AOL, the ailing online wing of media giant Time Warner, has appointed Gregory Coleman, the former executive vice president of global sales at Yahoo, as president of its web advertising unit Platform-A.

Coleman is the role's third incumbent in just over a year, replacing Lynda Clarizio as ad sales supremo on AOL's main portal and a range of affiliate websites.

Said AOL ceo Randy Falco in a memo to staff: "No doubt Greg is joining Platform-A at a difficult time. The deepening economic recession is affecting every corner of the economy, including our own."

Alongside his stint at Yahoo, Coleman was previously president of US Magazine Publishing and vice president of the Reader's Digest Association.

Imran Khan, an analyst at JP Morgan, predicts that AOL's ad revenues from the fourth quarter of 2008 will fall by 18% to $64 million (€49.7m; £44.2m), following a 6% decline in Q3 last year.

Data sourced from Wall Street Journal Online; additional content by WARC staff