Among the multitude of tools you can use for ecommerce, few would regard Google Analytics as the sexiest. Its Advanced Segments feature is pretty great, though.
Topic: Segment Discovery
Just-in-Time production helped Toyota become one of the most successful companies in the world. You can make it part of your marketing plans.
If you let your data get old, your retargeting ads become stale, even generic. That means your targeted customers get annoyed. And see you as out of touch.