curious about the preview text

I'm curious why the "preview" text (when looking at a thumbnail view of a page) pulls from lower down on the page rather than the first words in the intro module?

Carma - you should definitely fill out your article description when you first create a page. That way you can control what shows up in the page preview, and, most importantly, in the search results pages on Google.

The description is also a perfect way to introduce your primary keyword to the search engines.

See, I was one of those bad kids in school who filled in the outline AFTER writing the paper, instead of before.  Thanks for letting me know!