Sohu (Nasdaq: SOHU) released first quarter earnings before market open on Monday. First quarter revenue hit $84.8 million, up 156 percent year-on-year and 30 percent quarter-on-quarter, while net income reached $21.6 million, compared to $4.5 million in the year-ago period. Sohu's total advertising revenue was $34.8 million, up 36 percent year-on-year and three percent quarter-on-quarter. Non-advertising revenues, which include wireless value-added services and online games, were $50.1 million. Online game revenues were up 71 percent quarter-on-quarter and more than 24-times from the year-ago period to $41 million. Sohu estimates total revenues for the second quarter will come in between $93 million and $96 million, with advertising revenues of $40 million to $41 million and online game revenue of between $43 million and $45 million.