Awesome! This book is so great that a lot of the ideas here can be applied to other online businesses too (even if they're not blog-based per se).
Best part about this book: the updated 2014 edition, which is what I bought. The blogging environment was a lot different back in 2010 - 2012 (and a lot easier back then), so I knew that books written back then would be out of date for me for now. Ruth's book was one of relatively few books that had been written or updated in 2014 and onward. Very well done, lots of non-obvious tips and tricks, and lots of clear explanation not just about HOW to do things, but WHY.
One criticism: I bought the print version, and there are a few illustrations there that were obviously done in color for the e-Book version, but they wind up in black-and-white in the print version. Surely it could have been easy enough to change the way these illustrations looked in black and white to optimize it for the print book e.g. using dotted or dashed lines, or more strongly contrasting shades of gray? I felt rather frustrated at that. However, it was the only problem I encountered (it only affects literally a few small things) and it was not a major drawback. I still give the book a full 5 stars, it's still great despite this minor issue.
Overall, for blogging in 2014, 2015, and beyond, I would highly recommend this book. It's relevant for TODAY's blogging environment - no 'old school' or out of date stuff like older books have.