Is the Internet an Emergent Public Sphere?

Much has been made of the power of the Internet and related communication technologies to serve as a new public sphere in which democracy can flourish. The evidence, however, has been limited; like the telephone and the postal letter before that, the Internet has powers as a capable tool for organizing social action and protest. Otherwise, though, it seems to have been co-opted by commercial interests and to be used by the public for arguments concerning already settled opinions, a far cry from the fruitful and thoughtful debates demanded by a true public sphere.