I tend to agree with Dave. Lots of ideas are born, shared, discussed and improved in the blogosphere. Ideas are like chain reactions. One idea spawns other ideas. This multiplier effect, result in mind bombs. Even if there is commercial benefit, it is good to engage – discuss, argue, shout, be shouted at.
From Dave Winer’s Blogging is part of life:
Blogs are where new businesses will spring from. Think of blogs as being like dorm rooms, and remember that’s where Dell Computer came from. Blogging communities are incubators.