I have been using Newsfire since February of last year. It was the first RSS reader that I've ever paid money for. Newsfire had a good deal of issues that I didn't like. I emailed the Newsfire developer and asked if a bug could be fixed, but he replied that NewsFire wasn't in a development cycle. He wasn't very nice about it either. Anyhow, I had been tempted to go back to NetNewsWire for some time now, but never did because I didn't want to pay for a second RSS reader. Luckily for me NewsGator is now giving away NetNewsWire for free! I have switched back and I am extremely happy so far.
For years I have used NetNewsWire as my RSS feed reader and until it was bought by Newsgator, I had planned on buying the pro version. A few weeks ago I decided to buy an RSS reader, so I tried out NewsFire. I really like the interface and how snappy the application worked, even with my hundreds of RSS feeds. I bought a license and have been very happy with it so far except for a small problem that I have contacted the developer about. Flickr's photo tag feeds contain an enclosure that links to the full sized image files:
<link rel="enclosure" type="image/jpeg" href="http://farm1.static.f....." />
I feel the polite way for a newsreader to handle a binary enclosure, is to offer a button or link that would allow the user to download said item. Unfortunately, NewsFire only does this with MP3 files, so every time I try and view a flickr tag feed I have to scroll through a massive full sized image, which can be upwards of 7 or 8 megs in the extreme. The developer responded that NewsFire wasn't currently in a development cycle, so he didn't know when he would be addressing the issue. I hope it is soon, being able to comfortably view images from flick is one of the primary reasons I use a news reader.