Open Source, Passwordless Login with a Tweet

This is clever. At my last startup we were building a tweet-based mechanism for buying and selling goods and services over Twitter. We'd use procedurally-generated haikus, along with unique hashtags for location.

The haikus would have particular forms for buyers and sellers, but also create unique creative content on Twitter. The idea is that it would create an artform out of transactions.

Really like the thought behind this (at least until I start thinking about security...).