The Science of Familiarity: Increasing Conversions by Being Unoriginal

Do you remember when Slack launched? At the time, I was a diehard HipChat fan. Needless to say, I wasn’t interested in trying Slack.
I considered it nothing more than a passing trend. Now? I use it for an average of 10 hours a day for personal and professional reasons. (Sorry, HipChat.)
What’s going on here? How’d I go from loathing something to using it daily in the span of just 3-4 weeks? It’s called the mere-exposure effect, which means we tend to develop a preference for things just because we’re familiar with them.