Publishers as technology firms. Technology companies as content providers. Social networks as ad agencies. In a post-Web 2.0 world, all bets are off on precisely what kind of role media enterprises can play online. Now we have a social network as ad network: LinkedIn on Monday launched its own ad network. In conjunction with ad network Collective Media (which targets high-end media sites) LinkedIn will let other select sites target its users when they visit those partner sites. LinkedIn rate cards reportedly show display ads starting at $30 CPMs and going up to $76.50. Text ads range from $12 to $20 CPMs.
