Lift is the first project to be funded by the Obvious Corporation, a company headed by the founders of Twitter.
Twitter is set to attract millions more members in coming months, said Twitter co-founder Evan Williams.
Twitter gets a dynamic new two-pane design.
Twitter mobile use has grown 62 percent since April, a Twitter exec wrote today.
With more than 14 million users, rumors of deals with Google, and celebrity Twitterers, the social networking tool has become all the rage.