This summer's no-brainer career move now looks like a headscratcher. Vish Makhijani left his job as Yahoo's head of search in June to join Yandex, a Russian search engine which had filed for a $3 billion public offering the month before. Getting pre-IPO stock options, with the exit in plain sight? Much better than watching Yahoo shares sink from $34 to below $13. But Yandex has postponed its IPO plans. Anyone want to take bets on how long Makhijani will stay as CEO of Yandex Labs, the company's U.S. outpost? Memo to Vish: Microsoft may still be hiring.