If you don’t already know, Google Takeout is an awesome service which allows you to export data from different Google services you’re using with your account. And it just got better. It already lets you export and back up Gmail, Google Drive, Picasa photos, Reader, Google Voice, and a lot more. Google has now added the ability to download your Google+ and Blogger data too.
Data from your Blogger account will be offered as XML files, while your Google+ stream comes in html files of your posts. Your Google+ circles are exported as vCard files.