MarcoPoloLoco is a mobile app that allows you to send a message (a Marco) to a location at a palce in time. Anyone at that location will receive the message and can choose whether or not to reply (a Polo).
Essentially, you can filter who receives a message to people by place and time.
You select a location rather than a list of people. So let's say you want to send a message to the office...you select your office location and and we deliver the message only to people that are there at the time you specify.
No longer will you spam people that have no interest in the discussion. If they are out of town, busy, or not in that location they won't be annoyed by something that does not pertain to them.