Welcome to the Q&A Forum

This one's a bit weird - your main "Login" link is fine - this is happening down in the comments section (under "Leave a Reply") - that login link tags the source page, so that you can return to the post. In this case, I think I'd actually nofollow that and it's probably fine to block it in Robots.txt. This is where things get really situational, as normally I'd advise against that - see my recent post: http://www.seomoz.org/blog/logic-meet-google-crawling-to-deindex In your situation, though, Google only seems to be indexing 2 of those URLs currently, so you can probably cut this off before it becomes a problem. Our crawler is being a bit more aggressive in this situation (and, honestly, these links could pose a problem long-term). If you had a ton of these pages indexed, I'd agree with Slava and recommend rel-canonical, because Robots.txt is pretty ineffective for de-indexing (plus, nofollow causes the problem in my post). Sorry, I'm making this clear as mud I think a nofollow and blocking are fine here, because basically the problem hasn't happened yet - you're trying to prevent future problems.  You could also monitor for these URLs in Google's index for a few weeks, using this command: site:irishdancingdress.com/wp-login.php ...if that number stays low (it's currently 2), then you're good to go.