Twitter only allows 140 characters.
Average Google Adsense takes 100 characters.
To me they are yin and yang in the battle to capture user’s intention. Don’t rush into asking where is the revenue model. By the time revenue model becomes clear to everybody, Twitter will be another blockbuster story. It will be too late by that time.
Update: I like the way Tom Simonite at NewScientist describes Twitter: column-inch grabbing microblog platform
Update: Looks like today is going to be the day of education for me. Rajesh sent link for twittervision.com.
I see seeds of post-Google world in fast evolving twitter ecosystem.