According to Gartner we all will go virtual

"By the end of 2011, 80 percent of active Internet users (and Fortune 500 enterprises) will have a “second life,” but not necessarily in Second Life, according to Gartner, Inc.

“The collaborative and community-related aspects of these environments will dominate in the future, and significant transaction-based commercial opportunities will be limited to niche areas, which have yet to be clearly identified,” said Steve Prentice, vice president and distinguished analyst at Gartner. “However, the majority of active Internet users and major enterprises will find value in participating in this area in the coming years.” via adverlab

Gartner also identified five laws for entreprises:

Virtual worlds are not games, but neither are they a parallel universe (yet).
Behind every avatar is a real person.
Be relevant and add value.
Understand and contain the downside
This is a long haul.