Keep in mind that the "By Inspiration" thing is basically just a quick way of putting those words into the search engine automatically for you.
If you click on "Video Games", it's the same thing as using the Search feature to look for "Video Games"
Then it does a search of all the lessons on the site that either have the words 'video games' in them, or where the teacher has added them into the keywords for that page.
You could probably get some interesting results by using weird words in the main page search engine too. If the other instructors are anything like me, they'll throw in random keywords sometimes, just in case somebody searches for something weird like 'Fish Food' or whatever.