Using The Tracker - Adobe ACROBAT READER 7.0 Manual

Using the Tracker

The Tracker window keeps a list of all the document reviews that you participate in,
including the email addresses of the initiator and other reviewers, and the date you
received the review invitation. You can use the Tracker to open PDF documents currently
in review, and to keep a record of reviews you've completed and review documents that
you've taken offline.
To open the Tracker window:
Choose View > Tracker.