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RSS: Really Simple Syndication
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More websites are starting to
offer RSS feeds, and more users are
making use of RSS readers instead of
visiting every website they want to read
individually. But what is RSS, why is it
getting popular, and most importantly
what can it do for you? Read on.
What is RSS?
RSS stands for
'really simple syndication', and it does
exactly what it says on the tin. Invented by
Dave Winer, one of the first webloggers, the
format aims to provide a standardised way to
obtain a website's content, instead of
forcing people to try to pick it out of
masses of HTML. It is a simple XML
(strictly, RDF) language designed to make it
easy to describe content.
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Information RSS gives you about content
includes its title, the dates when it was created and
last updated, and its URL. There is also a space for
content, which can either be used to provide a summary
of the content at the URL or just to provide the content
itself.
Which RSS Version?
There is a bit of a controversy about the
versions of RSS, for the simple reason that one is
wildly different to the others. While RSS 0.9 and 2.0
are broadly similar, RSS 1.0 is widely considered to be
a disaster little software understands or uses it, as
it's just too complicated. For most purposes, then, you
should stick to RSS 0.9 if what you're doing is
relatively simple, and offer RSS 2.0 if you want to give
more detail to some of your users.
How is RSS Produced?
While you could write a script of your
own to turn your content into RSS (it wouldn't be that
difficult if you store your articles in a database),
almost all CMSes and blog software packages now do it
for you automatically if you're looking for it, keep
an eye out for a small orange button that says 'XML' or
'RSS' on it. All you have to do is give some prominence
to the RSS feed, with instructions to your visitors on
what it's for and how to use it.
With most software, then, the RSS should
be produced either when you update your content or,
alternatively, every time someone asks for the RSS. It's
important to understand that RSS isn't a 'push'
mechanism: updating it doesn't send changes to anyone
until their software asks for them to be sent. This
often means a window of five to ten minutes between
something going in the RSS feed and people seeing it.
How Do RSS Readers Work?
RSS readers work by allowing a user to
'subscribe' to a feed, either by entering the URL of an
RSS feed manually or by clicking on a link that starts
with feed://. The reader then works something like an
email program, retrieving new entries as they are added
to the RSS and alerting the user indeed, they are
similar enough that many email programs now include a
built-in RSS reader.
When the user opens the new RSS entry,
they will see what you put in the content area, usually
with a link to open that page of your website in their
web browser. You have to realise, though, that they
won't see any of your ads or graphics in the RSS feed,
so it's best to give them some kind of incentive to
click through.
What Else is RSS Used For?
RSS readers might be the most common use
of RSS, but the format was designed to be used for
almost anything. There's nothing to stop you, for
example, from taking an RSS feed from another website
and publishing it on yours you can even be an
'aggregator', mixing relevant content from the RSS feeds
of lots of different websites to create a new, more
useful website.
That's where the word 'syndication' in
RSS' name comes from: it lets you virtually syndicate
other people's content on your site, and it lets people
syndicate your content on theirs. It benefits everyone,
since the one doing the aggregating gets more content
for their website, while the one being linked to gets
more links to theirs. If you want to do well on the web,
you should make sure you've got an RSS feed.
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