I prefer the term: Productivity Trap... and I have seen friends fall in to it. They will read and talk about new "exciting" GTD systems, and better ways to organize themselves.

I've seen them switch from: 'Things' to 'Evernote' to 'Omnifocus' to 'Trello' in the span of two or three months.

I'm all for being a more productive and organized person, but with all the time they spent migrating their tasks/projects to different task management systems, they could have just completed everything on their lists and more.