Twitter Announces Business Model

Twitter announced on CNBC yesterday that their plan for monetizing Twitter will start rolling out later this month (I think he meant next month - April). 

“We’re actually going to be later this month revealing exactly how we plan to make a sustainable source of income so that we can build a business,” said Stone.

Apparently it won't be advertising based. It will be something that "...benefits the eco-system". Sounds interesting. It will also benefit all the companies that are building Twitter apps, companies like UberTwitter and TwitPic.

I find it so interesting that many companies like ExecTweets and Mashable with its Twitter Brand Sponsors, have already started making money off of either the Twitter open API or tweets and Twitter traffic. Yet Twitter, valued at around $1B, barely generates any revenue and is a long way from profitability. 

I'm very curious to see what business model and monetization tactics they roll out. What are you thoughts on what those tactics might be? I'm hoping whatever it is doesn't disrupt the natural flow of communications between tweeps... 

What are you thoughts on what Twitter's business model will include?