Have the terms and conditions regarding search engines' rule of not following nofollow links changed or am i just misinformed??

I've been noticing since quite long that Yahoo siteexplorer shows 'nofollow' links as backlinks??
Check the 28th Site : Site Explorer - Search Results
The site : WordPress › Support The Rant And Rave - Speak your mind! (LINK = NOFOLLOW)

This is not the only place, i have seen this at many places. I have a habit of checking the backlinks of every site having the same niche as mine, to my surprise many a times these links are nofollow.

Any comments?