I discovered that you can set up a feed for images from Flickr - neat. Never thought of that before. My Bloglines feed lists now gives me updates on new photos added to the 'top 20 Northern Lights' group pix. In the process of locating aurora pix for RSS, I found searching by tags in Flickr frustrating. I got a lot of extraneous stuff (mostly multicolored jewelry) searching for various forms of aurora/ northernlights/ auroraborealis etc, even with advanced searching. I actually got better results searching full text - less jewelry, more auroras.The documentation on Bloglines was useful. I tried the various ways of adding feeds; organized things into folders and generally explored.
Clearly this is the best way for managing updates in many cases...but there are a number of news sources I use which don't have feed options yet, so I still get a fair number of email news updates.
