1, Publish a plan and let the world know it.
eg. I want to make the next big social app in SF this year.
2, Find friends who share the same plan with you.
eg. Dig a big hole on Mars in this year
3, If you want to have a drink after class
just share: “I want to have a drink near Stanford shopping center tonight”, and then select “friends and friend’s friends can see it”, after you click “Publish”, all of them will get notified immediately. Well you can also select don’t let them know it.