NetNewsWire is still a valid and good RSS reader, it’s been updated several times (you’ll wanna check the website for more info on exact details, but I know they’ve made several changes to it in the last couple of years)
That said, I believe that more people then ever now read RSS, and as such there are a plethora of good RSS readers, as opposed to two years ago when there was one(NNW), current tech geeks like Scott Beale swear by “Google Reader” to read their RSS feeds nowadays.
Other Tech Geeks like Leo Laporte and Gina Trapani say RSS takes too much time and rely on Twitter or Facebook to raise interesting news onto their radar.
I on the other hand use an incredible new thing called Fever, by a wizard called Shaun Inman, you can find it at feedafever.com, and it’s main point of differentiation, is that, after you give it all the RSS feeds you’re interested in, not only does it show them to you web based so you can read em on any mac,pc, iphone, google phone, but it does some algorithmic work to calculate what stories(or news) is “hot” (or relevant to you.
So, for example, I subscribe to six apple blogs, all with RSS feeds, but most days all six of those will “blog” about the same story, say “the new iPhone”, now with google reader or net news wire, that’s six posts to drill through to clear your “unread posts list”, whereas in fever, only the main story (or the one all six point to) is displayed. It’s marvelous.
Google reader, twitter and facebook can all surface stories to you based on the “friends” you follow, and that’s really cool. But fever surfaces based on the definitive sources. So, if LA times, Ny times, and BBC news all point to a certain story, you’ll see it for sure. For me, the combination of Fever (extremely focused) plus Twitter(extremely broad) meets my need for keeping up to date.(though I really try to avoid Twitter because of it’s high noise level.

