“Tools that provide simple ways of creating groups lead to new groups, [...] and not just more groups but more kinds of groups.”

“Unlike sharing, where the group is mainly an aggregate of participants, cooperating creates group identity.”

“[N]ew technology enables new kinds of group-forming.”

“The centrality of group effort to human life means that anything that changes the way groups function will have profound ramifications for everything from commerce and government to media and religion.”

“The basic capabilities of tools like Flickr reverse the old order of group activity, transforming 'gather, then share' into 'share, then gather'.”

“Society is not just the product of its individual members; it is also the product of its constituent groups.”

“[B]ecause the minimum costs of being an organization in the first place are relatively high, certain activities may have some value but not enough to make them worth pursuing in any organized way. New social tools are altering this equation by lowering the costs of coordinating group action.”