Export the Feeds from a Google Reader Folder:
Most feed readers let you import and export subscriptions using the OPML format. For Google Reader, you'll find this option in Settings > Import/Export.
But what happens when you need to export the feeds from a single folder so you can share them with a friend or upload them to a site? Google Reader lets you export the feeds from a folder:
http://www.google.com/reader/public/subscriptions/user/-/label/FOLDER(you should replace FOLDER with the actual name of the folder)
Another way to share the subscriptions from a folder is to make it public and to use this link for the OPML file:
http://www.google.com/reader/public/subscriptions/user/USERID/label/FOLDER(USERID can be obtained from the public page created by Google Reader)
This also works if someone shares with you the page of a public folder and you want to obtain the list of subscriptions from that folder. If I share with you my Googlers folder:
http://www.google.com/reader/shared/user/13577231804381328821/label/googlers
you can easily obtain the link to the corresponding OPML file by replacing shared with public/subscriptions:
http://www.google.com/reader/public/subscriptions/user/13577231804381328821/label/googlers
{ Inspired by Abhijeet M. }