Catherine, who presented to the largest live webinar for us to date, has been addressing all the unanswered questions in what they call a Hive. The Agile Commons community has a number of hives and Catherine has created a Product Management and Agile hive. You can review previous questions and answers within the hive. I suggest you subscribe. Also, I read the Agile Commons blog and it is good too.
I have a bunch of other Agile blogs that I read and can share but am interested in what you are reading, that is Agile specific.
Catherine's hive now has an RSS feed. Add the following URL to your reader.
http://ac.hivelive.com/hives/745b532810/feed