I've only just used an RSS browser - Shiira - for the first time today, and having browsed through old posts and seen that this was a major requirement for people considering various browser options, I have to say I'm perplexed. I'm not really understanding the full benefits of RSS. What exactly is it and what can it do? So far, all I've seen is as follows - I go to the NY Times website, click the little blue RSS button, and I get a list of stories in a simple text-only standardised type of format. But what more can it do? Is it possible to build my own personalized RSS page that updates with only the stories of sites I choose it to? Explain!