They don't. I don't think there's a 3rd party company who "makes a living" from selling twitter clients. In this space, money are made selling "social media ana

They don't. I don't think there's a 3rd party company who "makes a living" from selling twitter clients. In this space, money are made selling "social media analytics" to "enterprise" customers. And obviously it's easier to sell that when you have a "name" on the twitter client market. Now you see the connection ?