All the ways I've tried so far to enter multi-word keywords have resulted in each piece being entered as a separate keyword; this is not useful! I presume I'm doing something stupid, overlooking some simple approach that works.
This is particularly key for people's names; I've got a few tens of thousands of photos already keyworded as last-name, first-name, and indexed in Thumbs Plus, and I need to keyword new photos the same way.
I've tried using the keyword pane with just the name, and I've tried putting the name in quotes, and neither works, they both end up applying as multiple keywords.