What's the deal with portable content

RSS FEEDS
RSS (short for really simple syndication) is a way to receive regularly updated web content and gather it in one place for easy reading. Instead of constantly checking multiple blogs, news sites, podcasts and other sources throughout the day, one can subsrcibe to "feeds" with an RSS reader (often referred to as an "aggregator"), which will automatically keep itself updated with the latest developments as they happen. It's an efficient and pain-free method of keeping tabs on the world.

More information on RSS

Recommended RSS readers:
Google Reader
NetVibes
Bloglines
NewsGator

Some publications create widgets that allow one to easily rebroadcast snippets of stories on your blog, Facebook profile, iGoogle homepage, etc. Each would most likely contain small chunks of the most recent stories, and readers can see the full text of each when they click a headline.

SAVE & SHARE
When you find a particularly interesting story, there are several ways that you can bookmark it and share it with others. These services are all free, but some form of registration is required for each.
del.icio.us
del.icio.us allows you to bookmark a page and add tags, or descriptive keywords, to identify it. You can then share your del.icio.us page with colleagues and your saved bookmarks will be grouped with similary tagged pages from around the web.
Digg
When you "Digg" a story, it gets added to the site, where other users can Digg it themselves if they like it. When a page receives enough Diggs, it moves to the top of the list and gains more attention.
Reddit
Reddit works in a simliar fashion to Digg. You submit a page, other users vote up or down on it, and stories with the most positive votes rise to the top of the heap.