Comments in Sites are now powered by Discussions. This brings powerful features like +mentioning, responding to comments via email, etc. to Google Sites.

Release track:
Rapid release

Editions included:
Google Apps, Google Apps for Business, Government and Education

For more information:
http://support.google.com/sites/bin/answer.py?hl=en&answer=98225


whatsnew.googleapps.com
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