Twitter and Square, two companies that are currently sharing a CEO, are also teaming up on a new feature that allows people to make political campaign donations directly on Twitter.
Candidates can sign up through Square, which will verify their campaign, and then tweet out a donation card complete with a "Contribute" button. Donors who already have a Square account can easily give money to their favorite candidate and then jump right back into the Twitter stream. People who don't have an account will be prompted to enter their debit card and some personal info to comply with FEC requirements. Square takes a 1.9 percent fee from each transaction (as it already does with small businesses using the service).