I found one of my blog post was cached by Google (
www.example.com/post.html). I found that comment page of the post was also cached (
These two pages are showing in Google SERP when I checked cached posts of my blog. Is it possible to use canonical tag on the post
www.example.com/post.html?showComment=1372054729698 so that Google won't penalize my original post? Is there any other ways to redirect a blog post?