Twitter rival Facebook Inc (NASDAQ:FB) has also steadily worked to build up its mobile presence and as Reuters noted on Thursday, “Facebook Inc (NASDAQ:FB) Chief Executive Mark Zuckerberg has in the past repeatedly identified app-install ads as a significant source of revenue for the world’s No. 1 social network, although Facebook Inc (NASDAQ:FB) has never disclosed the precise amount in its financial results.”Facebook Inc (NASDAQ:FB) stock performance was -1.31% in last session and finished the day at $58.94. Traded volume was 88.04million shares in the last session and the average volume of the stock remained 67.11million shares. Facebook Inc (NASDAQ:FB) insider ownership is 0.50%.

“The primary reason is the downturn of the overall stock market in the US. Many US-listed Internet companies, such as China’s e-commerce company Vipshop Holdings Ltd and China’s search giant Baidu Inc (ADR) (NASDAQ:BIDU), saw their share prices drop in recent weeks,” Tian said. Baidu Inc (ADR) (NASDAQ:BIDU) dropped -0.91 percent to $155.80 Thursday on volume of 3.39million shares. The intra-day range of the stock was $152.76 to $157.92. Baidu Inc (ADR) (NASDAQ:BIDU) has a market capitalization of $54.48billion.

Zynga Inc (NASDAQ:ZNGA), a leading social game developer, is proud to announce the launch of FarmVille 2: Country Escape, giving players a brand new mobile FarmVille game at their fingertips – anytime, anywhere and any way they want. Starting today, the game will begin its global roll out on the App Store for iPhone and iPad and on Google Play. Zynga Inc (NASDAQ:ZNGA)’s stock on Apr 17, 2014 reported a increase of 4.36% to the closing price of $4.29. Its fifty two weeks range is $2.50 -$5.89. The total market capitalization recorded $3.76billion. The overall volume in the last trading session was 39.18million shares. In its share capital, ZNGA has 876.88million outstanding shares.

Citigroup Inc. upgraded shares of Yelp (NASDAQ:YELP) from a neutral rating to a buy rating in a report issued on Wednesday, TheFlyOnTheWall.com reports. They currently have $64.90 target price on the stock, down from their previous target price of $115.00. On Thursday, shares of Yelp Inc (NYSE:YELP) dropped -1.41% to close the day at $64.87. Company return on investment (ROI) is -2.00% and its monthly performance is recorded as -26.13%. Yelp Inc (NYSE:YELP) quarterly revenue growth is -20.06%.