As for how to migrate from Google Reader to Feedly, here is a tutorial:-
http://vandelaydesign.com/blog/tools/feedly/
In short, just download the Feedly plugin for your browser from feedly.com, run it and you will see this starting page:-
Follow the rest of the instructions and your migration will be completed shortly. Actually, the whole process is quick, simple and painless! :-D
Last minute I've checked, I have about 1,000 RSS feed subscribers for my Blog and nearly 3/4 of them are still using Google Reader, see the following summary captured from my FeedBurner:-
So, if you are one of them, act fast, and do the backup now, before it is too late! :-)