- Customer Support, twitter is customer support for a lot of companies and being public makes grievance redressal possible. They just need to get better tools and charge companies for being their support interface. The companies may not have choices.
- Events. Twitter is the heart of events. Create tools to manage public events and charge for them. Give something to the organizers and take money for it.
- Pages. Give an alternative business model to facebook. Its too big to fight right now. Give a paid version of facebook pages with a promise of not losing organic growth. Brands spent a lot on getting tons of likes that are not useful any more. Followers are still somewhat valuable. Make pages interesting for brands (give them something to justify the payment).
- Advertising is not always the solution. Customize for the key use cases.
- Open up. Facebook is the AOL of social. Someone needs to step up and be as open as the internet. Aren't you suffocating behind the closed doors? Did you really have a reason for closing them?
I know twitter isn't listening.