Site Feed, RSS, Webfeed - ???

Lisäsin tähänkin blogiin "Site Feed" linkin. Mikä se on?
Lue erittäin hyvä kuvaus aiheesta - löytyy otzikon linkin takaa.
Tässä vielä toinen linkki aiheeseen:
What is RSS/XML/Atom/Syndication?

Millä hyödynnän näitä?
Hyvä lähtökohta on ilmainen Bloglines
Tässä heidän kuvauksensa toiminnasta:
Bloglines is a free service that makes it easy to keep up with your favorite blogs and newsfeeds. With Bloglines, you can subscribe to the RSS feeds of your favorite blogs, and Bloglines will monitor updates to those sites. You can read the latest entries easily within Bloglines.

Unlike other aggregators which require you to download and install software, Bloglines runs on our servers and requires no installation. Because your Bloglines account is accessible through a web browser, you can access your account from any Internet-connected machine.

Ja lopuksi vielä RSS määritelmä:

Short for RDF Site Summary or Rich Site Summary, an XML format for syndicating Web content. A Web site that wants to allow other sites to publish some of its content creates an RSS document and registers the document with an RSS publisher. A user that can read RSS-distributed content can use the content on a different site. Syndicated content includes such data as news feeds, events listings, news stories, headlines, project updates, excerpts from discussion forums or even corporate information.
RSS was originally developed by Netscape.