I've been using Newsgator online, feedDemon and the outlook plugin that Newsgator provides for free as an alternative to Bloglines.
My bloglines notifier is telling me that I have over 2000 unread items, but I'm keeping on top of things with newsgator.
The idea was that I wanted to try a desktop and online feed reader that could be synchronised. This is working great. BUT - I couldn't bear the Outlook plugin and it was uninstalled within two days. I just don't consume RSS items the way I consume email. It was a jarring experience having to mark them as read and delete them.
I really like FeedDemon, and the reports that it gives me about which feeds I am paying more attention to, and identifying those that barely get a glance. But I think it is too early to start unsubscribing based on the reports just yet. But there are some adjustments in my workflows.
One thing is that I don't have my Windows Live Writer BlogIt button in the FeedDemon interface so I have to right click, open in new window then BlogIt. And my Connotea bookmarklet doesn't want to work in FD either. I could try the Add to Connotea in main window option, but I generally prefer to do this in a pop - up so as not to lose my place.
The other thing that was a little annoying, was when I imported my Bloglines subscriptions as an OPML file, I lost my folder structure - on the plus side this has freed me to think differently about how I organise feeds, on the minus side most of my feeds are just in one long list that I feel needs some attention.
It's too early to say if I will abandon Bloglines too - it has certainly been a constant companion for the last couple of years.
What got me started on using newsgator again.