Excluding parameters from seomoz crawl?

[AmericanOutlets]

I'm getting a ton of duplicate content errors because almost all of my pages feature a "print this page" link that adds the parameter "printable=Y" to the URL and displays a plain text version of the same page. Is there any way to exclude these pages from the crawl results?

[FrontlineMobility]

I have the same exact problem and I could not find a way to prevent them from being crawled so I came to a path with 2 decisions, attempt to redirect or fix these pages, or document them and ignore the warnings. I chose the 2 path just because it made more sense.