One of the things I have noticed right away is the improvement in the Blogger system since the last time I used it. They have come a long way in improving the user friendliness of the solution. While it doesn't have quite the flexibility of a Wordpress or Joomla, it does have the ease of use plus power that puts it beyond options such as Tumblr in my mind.
I also noticed since I connected my Blogger account to my Google+ account, as soon as I post an article I immediately get the option to share the article on Google+. It's a convenience, but one I'm going to learn to count on for sure.