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.

ChatGPT is hoping to grab another slice of your attention with Pulse, a now-in-limited-preview feature that will proactively deliver daily updates on information it thinks you’ll find useful. The new service is positioned as a personal assistant that will select contents “based on your chats, feedback, and connected apps like your calendar.” Forget about privacy; the real question is whether this becomes a news source that gives ChatGPT the ability to shape your opinions.