Lightroom Engineer Eric Scouten has posted a highly informative article over at the Official Lightroom Blog: Lightroom Journal
Eric: “So you want to make sure you’ve identified all of the people you know in your Lightroom catalog, but … you have several thousand photos in your catalog and you don’t want to spend time reviewing photos you’ve already keyworded. How to avoid that?
This is where a technique I call worklist keywords comes in handy. The idea is simple: Use another keyword to keep track of which photos you’ve reviewed for a certain subject area. Here’s how it works:“
Read the whole article