If there’s any universally accepted truth among data-driven marketers, it’s that ad placements based on individual data are more effective than placements based on context (i.e., the publication where an ad appears).

Another perennial challenge that suddenly seems to have many solutions is measuring the impact of advertising on retail sales. Nielsen Catalina Solutions, which combines Nielsen TV viewing data with Catalina’s retail purchase information, has just launched new variation of its service. This one is focused on measuring the combined impact of ads viewed on different types of TV and video devices.

Procrastinators of the world can throw a party whenever they get around to it: Google has once more pushed back complete third-party cookie deprecation.  The new target is “early next year.” Reasons for the delay include concerns expressed by U.K. data regulator Information Commissioner’s Office, an ongoing inquiry by the U.K. Competition and Markets Authority, and widespread discontent in the advertising ecosystem.