Google Reader will be gone when today ends, not sure what time zone Google is using for the apocalypse.
Turns out Google Takeout doesn’t extract everything you could ever want, so some resourceful folks have whipped up a Python utility that will get everything out of the dying service.
Check it out at readerisdead.com. I did this yesterday, and it took several hours. However, I’m a voracious consumer; my archive was more than 1.1 million objects, totaling 10.19 GB. Your mileage will vary.
Do it now. There is no tomorrow.