I used Last Played a lot in my playlists to make sure I listen to songs that I've not heard in a while. I didn't know about Last Skipped until this afternoon.
I was listening through a playlist when I was interrupted and had to leave. So I stopped in the middle of a song, a song that I like a lot. I didn't want to not hear it again for months because I had started playing it but didn't finish.
So I checked the Tags for the song, and I noticed that Last Played had not been updated to the current date of the partial playback, today. Then I also noticed the last Skipped tag which did, correctly, reflect the today's date.
I've mentioned more than a couple times in the past that Media Center has a first rate database base behind it. This is just another example of why I say that.
Thanks!