I suppose if enough people with similar individual attributes come togerther as an online community, then certain shared themes will permiate the social structure.
Deciding for example not to allow a greed focussed discussion to propogate on Gridcoin would be the example of this. As soon as someone on Gridcoin starts trolling about profitability a host of others will drown that dissent with examples of altruistic science; those users are deciding what kind of community they want and make it real through their actions.
RE: Which Type Of Community Are We?