I was really worried for a minute...

I discovered that Google Desktop Search does not index inside of files with no file extension, even if the contents of those files are plain text.

This gave me a huge scare just now, as I was frantically searching for my Startup School 2007 notes, and couldn't find them no matter what I searched for.

I used to think Google Desktop Search indexed my entire computer... not so.

The file had no file extension because Programmer's Notepad doesn't automatically add any extension to the file. So it ended up being extension-less.

This is something to keep in mind... I should go through and rename all files with missing extensions to append .txt to them.