Choose a short phrase - a prompt or a question - that piques your users' curiosity.
Keep in mind that your set should also work on mobile devices. So it must be very short indeed.
Topics that are topical, emotive in some way, or sound like they come from a real person work well.
A good trigger phrase is an art form - check out our blog for more content on this topic.
Did you know you can Insert a user's first name into icebreaker questions? Here's how it works.