Twitter expands ad program to mobile users

Twitter said Tuesday it was expanding its advertising program to mobile users, the latest bid by the short-messaging service to boost its money-making efforts.

Twitter fights spammers with lawsuit

Twitter on Thursday turned to a US federal court in its latest effort to stop spammers targeting the worldwide one-to-many text messaging service.

Twitter targets ads based on interests

Twitter on Thursday began letting advertisers target users with "promoted tweets" based on interests expressed at the globally popular one-to-many texting service.