If you've been using Google Reader and haven't moved to a new feed reader service yet, you should probably find a new home in the 72 hours or so.
FeedWrangler runs $19 a year, and I am totally fine with that as I like paying for things I like so they stick around. I also like its deep Instapaper support, and its take on folders — Smart Streams — are really handy.
David has also made a first party universal iPhone and iPad app, and it is really basic. It works for now, but I am really glad to know Reeder is going to support it soon. Hopefully sooner than later.