Is that something with any real evidence behind it or just Microsoft FUD? I have a hard time believing that patent trolls would even be interested in hiring engineers to read source code. Their business model is to send you a threatening letter with a settlement demand which is noticeably less than the cost of vindicating yourself in a courtroom. What do they care anything about what the code actually does, so long as they can maintain the charade sufficiently to make the threat credible?