I've been looking everywhere for a way to save all of my tags from Google Reader. I can verify that CloudPull preserves all tagged data and the links to the websites that have been tagged.
If you were worried about losing all of your bookmarks through Google Reader, this should put you at ease.
Now I hope Feedly and OldReader and any other Google Reader replacements incorporate tags, so that they can eventually re-incorporate my current tagged data.
The closest thing I know of for other operating systems is BackupGoo. http://www.backupgoo.com/ BackupGoo does not back up Google Reader, but it does back up other Google services.
If you were worried about losing all of your bookmarks through Google Reader, this should put you at ease.
Now I hope Feedly and OldReader and any other Google Reader replacements incorporate tags, so that they can eventually re-incorporate my current tagged data.