My old feed on Bloglines has 9,204 subscribers.
My new feed on Bloglines has 1,457 subscribers.
That tells me that people aren’t unsubscribing from old feeds and are just leaving them in place. It also tells me that Bloglines has a lot of “dead users.” (Users who aren’t using the service much, if at all).
By the way, it’s amazing how many dead feeds are out there. I deleted probably 200 dead feeds. Almost done.