I wrote about Twitter's development of a paid service.
A subscription business could offer Twitter a vital new revenue stream at a time when its advertising revenue has been in decline. As other companies work to peel off the remaining parts of the company’s business, Twitter needs to give its core user base reasons to stick around. It’s unclear that advanced analytics would be a major business for the company. But given the attacks that Twitter is facing from all sides, any investment in the core product is good news for users.