- A list of URLs to all the +1s you've handed out.
- Your Google Buzz history, presuming you have one.
- A list of contacts from your Circles in Google+.
- A list of the contacts you have saved in Gmail. (These are kept separate from your Circles contacts.)
- Copies of all the Google Docs you've uploaded.
- Copies of any photos you've uploaded to Picasa. (These may include photos uploaded for use on a Blogger site, if you've ever had one.)
- Some basic information about the personal data you include in your Google+ Profile
- Links to each entry you've personally shared on your Google+ Stream. (Other people's streams that show up in your feed are not included.)
- Your full Google Voice log, including a list of all attempted and completed calls and texts, MP3s of each voice mail, and Google's transcript of each message.
Everything arrives in a single zipped file that you unpack, revealing a separate folder for each Google service. The formatting of this material can be inconsistent. Google Voice messages are saved as individual HTML and MP3 files, but your +1 bookmarks are amalgamated into a single file. Picasa photos are well organized into folders, but Google Docs are delivered en masse regardless of how you use Collections on the site.
Circles and Contacts information comes in the form of several VCF files, each containing information for contacts split into each of the default categories for Google+. These are easiest to open with Windows Contacts (right-click on a file and you'll see the option; no, I didn't know this application existed either). Information on my Circles contacts was limited to a name and a malformed link to their Google+ profile.
What Your Takeout Order Does Not Include
What's most surprising about Takeout isn't how exhaustive this data is, but rather how much of your Google life it completely excludes. Although Google has said that it will continue to add services to Takeout, here's a (partial) list of what you don't get now with the Takeout system.