ikordo.com was a service for scheduling meetings by email. It'd engage in back-and-forth with all the participants and settle on a time.
I tried using it, liked the experience, but lack of Google Calendar integration discouraged me -- the meetings that ikordo would schedule would need to go into my calendar in a convoluted way.
Sandy, on the other hand, is positioned much better to schedule meetings by email. She already does email, and she already stores my appointments. Google Calendar integration remains a problem, but it's an orthogonal problem.
So, wouldn't it be cool to ask Sandy to schedule a meeting with four people and have her deal with the details? I'd use that, and since I often use Sandy to store the appointment anyway, it'd really be great, taking my mind off the trivialities of scheduling.