Other characteristics that help differentiate blogs from ordinary websites
include the following:
. Blog posts are usually archived and have a link to the URL where the post will be
archived when it floats off the home page. This URL, called a permalink, is done
because bloggers often link to other blog posts to comment on them. With permalinks,
and a similar process called TrackBacks, readers can then follow the conversation
between two or more blogs on the same topic.
. Blogs often have sidebars, called blogrolls, with listings of the bloggers??™ favorite
blogs and other websites.
. Bloggers were among the first to use an XML technology called Really Simple
Syndication (RSS) or a competing technology, Atom, to make postings easily accessible.
More traditional news outlets are now adding these XML feeds to their sites,
and browsers (Firefox, Opera) and portal sites (Yahoo!) are including RSS and Atom
readers in their products. See the next section for more on syndication.
. Most blogs encourage interaction between reader and writer. Some blogs permit
readers to comment on posts directly on the page.
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