The following pages have been mocked up to show you how the result pages look when you have found either rel="external nofollow", the lack of "rel="external nofollow" or a possible false positive, where the page does not show the typical Wordpress failure signals, but instead shows some nofollow attributes that you might just want to look into.
Click on any of the following links to see simulated results:
FAILURE - "external nofollow" found in comments on a Wordpress blog
SUCCESS - "external nofollow" NOT found in comment on a Wordpress blogs
PROBABLE SUCCESS - just "nofollow" found somewhere on a Wordpress blog on the page. Probably safe to post to, but check out the links below anyway for peace of mind