Whilst reblog is an amazingly prescient tool, I'd have to fundamentally disagree with the concept that "web curation" was art's great gift to culture this decade. Not only did the link-sharing site delicious start in 2003, but the online curated link collection web zen started even earlier (2002?). My observation is that as the internet gained cultural ground, the idea of curators-as-gatekeepers collapsed when all subculture was indexed and googleable.