Are website popups bullshit?

Website popups seem to be growing in popularity, but do they work or just infuriate visitors? In this episode, Adam and Simon discuss the reasons popups are popular, how they are used badly, why they cost businesses so much money in lost profit and visitors and how they can be used effectively. Could we see a return of the popup blocker that was so popular in the early 00s? Do you love or hate them? Are you using them successfully?