Shares of Chinese Internet portal Sohu.com (SOHU) and its online games spinoff, Changyou.com (CYOU) were down Monday after both said operating costs could rise this year, possibly squeezing profit margins. Both, however, beat Wall Street's Q4 expectations. Sohu, which gets revenue from online ads, reported earnings per share of 60 cents, down 51% from the year-earlier quarter but still well ahead of Wall Street's view of 54 cents, according to