If I move to NewsBlur, I have to make sure that my subscription list and saved stories in not locked into NewsBlur. I might have to/want to move to other RSS reader.
I can download my sites in OPML. But there is no way to download my saved stories.
This is important for backup. If I have decided to save some story out of hundreds of other stories then it has to be important to me. I would want to keep its backup save with me.

Also, as per your reply at the following link, it seems that Google Reader Sync is out of the question. This only increases the importance of backup.
https://getsatisfaction.com/newsblur/...