Sogou's CEO commented over the weekend that some users of its Internet browser running Qihoo 360's popular antivirus program are complaining about having the Sogou browser removed as their default selection. If the finger-pointing here ends at suggesting that Qihoo 360 is deliberately moving customers away from rival programs, it wouldn't be the first time that the company has been involved in this kind of controversial practice.Qihoo 360 quickly countered the knock, accusing Sogou of misleading users into installing the browser in the first place. Lin also noted that Qihoo 360's video search site is scaling back on the number of popular videos hosted on Sohu that are promoted on its landing page. In short, Qihoo 360 plays a vital role in the traffic that it sends to Sohu's video site and its market-leading antivirus software can funnel traffic from one site to a rival. One can argue that if it abuses those perks, users will vote with their feet, but it's never that simple.