Does the IS search engine look at Title and Description, or just at the Keword and Category fields?

I think I have read on istock somewhere about this, but I am not sure where: I have in my mind that the titel and description do not to affect the search results. However without warranty.

The words in the title used to show up as keywords that could not be edited (via the normal keyword system).  This was also true when they changed over to the new DA system.  A lot of people complained about having Indiana as a DA'd keyword when they didn't enter that keyword in.  It turned out that any title that had the word "IN" was DA'ed to Indiana (since it is the abbreviation for Indiana state).  There were a lot of other examples like this, but that is the one that comes to mind.

There was talk of removing the title from the keywords, but I'm not sure where that stands.