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It seems like only yesterday - or almost a year and a half ago - that Yahoo!'s Jerry Yang was named interim CEO of the embattled and fragmented company he co-founded. Taking the helm of Yahoo! following entertainment-industry veteran Terry Semel left Yang awash in the throes of a mishmash of "Web company meets traditional media company" - plus a bunch of Web 2.0 acquisitions sprinkled here and there.

By any estimation, the position he inherited would have been a challenge for even the most seasoned executive. So it comes as little surprise that Yang has announced he is stepping down from the position of chief executive, returning to his role as Chief Yahoo!