How will social media change business?

Remember that revision of the 2005 blog cover we were working on? We’re still at work on it, believe it or not, and we need predictions. So here are some questions:

How will social networks and other new communications tools change the way businesses operate?

How will they change our careers?

Is there one big name in Web 2.0 that will seem like an ‘08 fad three years from now? Are there two? Why?

Looking at it another way, is there something that seems obvious today that is exaggerated, or false?

What will BusinessWeek be up to in three years?

If you blog now, will you be doing it in 2011? How will it be different?