I've been using newsvine for about a week now and I've got to say it's simply fantastic. I love the way fresh and relevant news is served up, ranked and commented on by members. I've already plugged an RSS feed into my own site and constantly find myself being drawn back to newsvine.
The only suggestion I'd like to make is why not have more localised news? Ok so there's sections on the Middle-East, Denmark etc (all places that are currently making global headlines). I guess the sections are driven by the articles which are obviously driven by members. So as the newsvine membership grows it's quite possible we'll see an Australia news section (?)