Another popular tactic: Suing porn companies to be granted standing (all the conservative judges in the South will gladly hear cases that cost porn companies money), then add defendants that you want to shake down. In the past, patent trolls have done this with Google/Microsoft/etc, but apparently these large companies have been fighting back or (more commonly) lobbying to get patent troll applications violated, so the nuisance patent trolls tend to stick to small companies they can easily shake down for a $20,000 "licensing fee."