Luis Goncalves has put together a list called the 100 Top Agile Blogs:
If you don't know Luis, he lives and breathes driving adoption of Agile practices.
Luis is also an Agile Coach, Co-Author, Speaker, and Blogger. He is also the co-founder of a MeetUp group called High Performing Teams, and he is a certified Scrum Master and Product Owner.
Here is a preview of the list of top 100 Agile Blogs:
For the rest of the list, check out 100 Top Agile Blogs.
Lists like these are a great way to discover blogs you may not be aware of.
While there will be a bunch of blogs you already know, chances are, with that many at a glance, there will be at least a few new ones you can add to your reading list.