Given the article's opening paragraphs (small businesses and startups falling prey to the trolls), I'm surprised there hasn't been an organized attempt to inform people of the problem. Maybe I don't know about it and the author doesn't mention it, but it seems like there should be a website that categorizes the various players and their actions, with forums so victims and potential victims can share their experiences. Once you have all the data being collected in one place, then you can get the word out (how?) so that people know to check online even before checking with their lawyer. It seems like patent trolling is something that could be partially defeated with better and more widespread information.
I expect it's standard for the troll's "pay up and sign here to avoid ruinous litigation costs" deal to include an NDA that would prohibit things along those lines.