Meetsy.

Founder coffee chats get scheduled, then rescheduled 3 times, then cancelled because the other person's calendar blew up. People who would benefit from meeting each other never actually meet.

Meetsy reads both people's calendars and schedules a 30-minute chat only when there's natural slack on both sides—no back-and-forth, no guilt when something comes up. Also suggests intros based on mutual interests from LinkedIn + Twitter.