The document summarizes key insights from a measurement workshop presented by Josh Adler. Some of the main points are: 1. Audience measurement which looks at metrics like reach and demographics is different than measuring advertising effectiveness and should not be compared to web analytics. 2. Targeting will become more important to drive major brand spend online and increase CPMs as targeting requires ad platforms and measurement to be more integrated. 3. The metrics and tools will continue to evolve but we should stick to basic metrics for now while the challenges of new technologies are addressed. 4. The digital measurement industry is still immature so providers, buyers and sellers need to work together through organizations like DMMA to establish standards