Me too have the same issue ! but not indexed in the Google ! but URL parameters in Google Webmasters shows there are 5K errors !
Should i use the URL Parameters settings or which one ?
Also make sure replytocom links are not blocked using Robots.txt, as it will stop Google bots from crawling and this your links won’t get deindexed. This is one mistake which I did, and later after removing replytocom parameter from robots.txt file, I was able to get most of my replytocom links deindexed. These are warning by the blogger ! http://www.shoutmeloud.com/how-to-fix-replytocom-links-issue-in-wordpress.html - he showed how to do that ! but my problem is different - It's Good that it's not indexed but i don't want to take any risk ! how to avooid them for future !
Someone else told me here that some plugins are doing/helping for you ! and not seen in your Robot.txt !
Confused confused ! so much confused ! Please help me !