RSS

What can you tell me about RSS and RSS feed? Here is what I understand about it. It is an XML representation of a web site. It is basically XML data.

I think a web browser can be configured to display the RSS in a manner such that a visitor to your web site can understand it contents.

Am I right?

Are there desktop applications that can read RSS feed and display them?

I have read whatisrss dot com

RSS (Rich Site Summary) is a way to receive information about web sites you are interested in. It seems that the real magic of RSS is not in the content
that a web site has but rather in the RSS Readers.

Feedreader is a Windows Program that seems to do what I am looking for in order to understand how this looks.

I have downloaded it and I am running it.

The next question I have is this. How, specifically, should a webmaster set up his site to allow RSS to be available on his site? Apart from putting
the data in XML format, I don't have much more information.

What are RSS widgets?

It all depends I guess, are you using a CMS like joomla, wordpress or drupal? these will all have RSS features as installable "modules" ... if not, you will have to write the RSS feed yourself ...

I think if a owner of a website has content that is constantly changing, then yes I would have and RSS feed.