The belief that all immigrant groups eventually become acculturated into the mainstream is being tested as second-, third-, and fourth-generation Hispanic Americans adopt English as their language of choice, while still identifying themselves as Latino.

This is driving a surge in English-language Hispanic media, says Juanita Panlener, account supervisor with Vanguard Communications. "Growth has been across the board," she says, "including online, in part because a lot of the English-language Hispanic audience are in the 18 to 34 age group that ...