Recession and focus on ROI are reshaping online advertising

Amid doom and gloom reports of tanking online display ads, the Web’s advertising model is quietly reinventing itself as one with a greater focus on return on investment. For instance, ad networks and ad tech firms that promise targeted online ads have received tens of millions in financing in the past few weeks. One ad executive said there’s “a general movement among advertisers away from cross-site media buys towards adoption of targeting and performance-based advertising as key to the…