There is a way to get somewhat of a partial list of your photos that would look something like this and be easier to edit out the chat:
<rdf:li>animal</rdf:li>
<rdf:li>AR Before</rdf:li>
<rdf:li>Art & Jolene</rdf:li>
<rdf:li>Bells</rdf:li>
<rdf:li>Bill</rdf:li>
<rdf:li>Bill (Old Toad)</rdf:li>
<rdf:li>Birthday</rdf:li>
<rdf:li>Book</rdf:li>
<rdf:li>Chris</rdf:li>
<rdf:li>ColorChecker</rdf:li>
<rdf:li>Courtney</rdf:li>
<rdf:li>Derek</rdf:li>
<rdf:li>Edie</rdf:li>
<rdf:li>Extemded Family</rdf:li>
<rdf:li>Face</rdf:li>
<rdf:li>Family</rdf:li>
Here's how:
1 - select one photo as the keyword mule in your iPhoto library and add ALL of the keywords to it.
2 - export out of iPhoto with the following settings:

3 - download the demo version of Media Pro 1.
4 - launch MP and drag the keyword mule file into the open window of MP.
5 - select the thumbnail

and use the Action ➙ Export Annotations menu option.

with these settings:

That will create an .XMP file with the same name as the image file that, when opened with TextWrangler, will look like what I posted above. It should be easy to batch edit out the unneeded <rdf:li> and</rdf:li> with TextWrangler and give you want you need.