I’m not sure about if expert could be a good or a bad thing in itself but maybe it can depends on the organisation of the group in which this specialised knowledge is spread. I think to this linked to Mathieu O’neil text Cyberchief in which he argues that on the internet, in contrary of what one might think, not everybody is equal. Each can « become equal » by learning but in fact the ones who have more (technical)skills gains in authority because they are the ones everybody are listening to and trusting.
Actually, I’m just asking myself the inverse 🙂 if collective intelligence is sharing a specific knowledge (more than just information) and by doing it the collective gains more capability than the sum of each member’s intelligence, would a kind of expertise not be good for the community ?