It's Really Complex To Make Something Simple.

You Don't Have To Start From Scratch To Have A Massive Impact On The World.

From A Product Standpoint, We Want Every Touch Point To Feel Magical. It Inspires Trust.

It's A Matter Of Invitations Versus Context. Twitter Is Really Good At Providing Context, Like, I''m Having Coffee At Third Rail Coffee.' Foursquare Is About Invitations To Places. In This Respect Foursquare Has Started To Replace Yelp For Me.

Twitter Was Around Communication And Visualizing What Was Happening In The World In Real-time. Square Was Allowing Everyone To Accept The Form Of Payment People Have In Their Pocket Today, Which Is A Credit Card.

The First Complaint We Hear From Everyone Is: 'why Would I Want To Join This Stupid Useless Thing And Know What My Brother's Eating For Lunch?' But That Really Misses The Point Because Twitter Is Fundamentally Recipient-controlled - You Choose To Listen And You Choose To Leave. But You Also Choose What To Put Down And What To Share.