Age old debate: Owner/Operated or PurePlay?

Should Ad Networks go on an acquisition spree and start buying content web-sites.  Many have, more probably will.  Is the conflict of interest too strong for both advertisers and publishers or is this the new world economy and are the conflicts palatable?  What do you think?

MediaPost Publications Why Ad Rep Firms And Networks Might Start Buying Content Sites 07/26/2010.