Microblogging phenomenon Twitter has famously had difficulty monetizing its service. Recently, it added small, unobtrusive text ads, and now the company has confirmed that it'll be offering paid pro accounts in the near future. Founder Biz Stone confirmed the rumours to Business Insider, who suggest some of the features that might be offered for a price. A way to verify who really owns an account, a way to find out what people are saying about a company, and better analytics are all on the cards. Freeloaders can rest assured, however, because Stone also confirms that there will always be a free version of Twitter available to businesses and individuals. The new features for sale will be solely add-ons. As for how much they'll cost, well, we'll have to wait and see. (via Business Insider)