Add rel="nofollow" to reply to comments link — at Version 3
|Reported by:||pearsonified||Owned by:|
Description (last modified by ocean90)
This is an easy problem to diagnose and fix. Basically, the reply to comment links all contain a query parameter—?replytocom—in the destination URL.
Google does a poor job of "deciding" whether or not these are unique URLs, and as a result, these URLs are often indexed. This leads to duplicate content issues, which leads to users bitching :D
Here's a sample of some search results where the ?replytocom query parameter resulted in a bunch of duplicate indexing: