While you were away, Radio Replies Volumes 1-3 was released on Kindle and Nook ($0.99!). While RR is available online, having access to it on the Kindle, with the ability to highlight, notate, etc., is definitely worth the minor cost.
Here's the link for the Kindle version on Amazon: Radio Replies - Volumes 1-3
And for the Nook version at Barnes & Noble: Radio Replies Vol. 1-3 for Nook
Don't want to impose, but would you please ping your RR list and let other Freepers know about RR being released on e-book? Thanks.