Do not lock in users!
Allow users to export their feeds as OPML! This is important. Many users here have bad experience from cloud applications disappearing (i.e. Google Reader), please leave us with a way out from The Old Reader as well. I guess that this will give you more users in the long run.
The OPML export link is at the bottom of the Settings page.
Well hidden though, this could be framed more clearly. For me, it's the primary reason why I don't like using Pulse and Feedly.
Daman Bahner commented
Thanks for keeping that export, I am very happy with the service, just wanted to download my OPML to share my feed with others :-)