Written by: Mark Terry The high-tech world is continuing its 20-way patent infringement war, but it’s not the usual suspects – it’s Yahoo vs. Facebook. Yahoo’s lawsuit claims that Facebook is infringing on Yahoo’s social networking patent (US7599935), which may be the basis of Facebook’s networking platform. As of late, the superstar high tech companies have been aggressively taking it to their competitors to protect their current revenue streams, but also, more importantly, to secure a dominant position in the future. Yahoo, which has been struggling over the last three years, recently lost ground to Facebook in the online advertising market. There is