The following video shows the faces and brings together the voices of those whom we describe as "patent trolls". Novell was recently a victim of one (if not two).
Some days ago, an update was published about the patent dispute between Nokia and Qualcomm.
Nokia told a Dutch court on Friday it is not infringing patents of U.S. chipmaker Qualcomm because the cell phone maker uses chips of Texas Instruments, which already pays for Qualcomm patents.
Narrowing down to desktops and laptops, and judging by Web requests that go through Clownflare, many people there use GNU/Linux or Google's 'bastardised' version of it (with spyware preloaded)
From what we can gather, the tram ticketing system does not use Windows; we never saw it crashing or rebooting (or showing some Windows logo) in decades, so we assume it runs some kind of Linux