It's only a curiosity. I like to see what games I haven't played in a while and how long other games took to complete. I also found it interesting to unravel some of how the Wii stores it's messageboard data. If you do most of your stuff through the Homebrew Channel or other non-official channels and don't play many official games then it won't give you very interesting results.
===Can you get it to show the apps loaded through HBC?===
Unless I've missed something, the HBC does not log play records so there is no way to retrieve this info.