Take it from another angle.
When you sit in front of your computer and want to find something you go to a "search engine" which is something like Google, Yahoo or others. You type in a word and it presents you with choices.
How do these search engines know all this ?
They have little "spiders" that run over all the web sites looking at them and indexing the content. If the content changes a lot (like it does here) then they realise this on the first few runs (notice the changes per visit) and so do it more often.
So a spider is a bit like a person sitting at a keyboard and reading and taking notes on the entire site page by page. This is added to the guide for when someone searches for key words like Morgan.
TM is a busy site and so becomes more important as it is so focused on Morgan and so it gets many spiders indexing it.
Any good ?