I went through a nostalgic journey thanks to https://www.intercom.com/evolution. Starting with AIM, I realized how much messaging has impacted my daily life. It's how I stay in touch with friends, work on projects with co-workers, but it's also how I met my high school sweetheart and wife!
It looks like it will continue to take over more of how we communicate with others. For example WeChat in China is already replacing hosts and waiters at restaurants.
Would love the GH community input and predictions! :-)