Many sites offer you the chance to subscribe to their site through the use of a web feed, namely RSS ( Really Simple Syndication), for quick and easy automatic updates to the sites you love. If you're a web developer who updates his site frequently and wants to offer the same service to your subscribers, you'll find that it's actually quite easy to create.
RSS : The Need-To-Know
When you check a RSS feed, you see lots of information: information about the site you're receiving the feed from, and more importantly, the blog posts which have been posted on the site. Keep all of this in mind: you'll need it when you create your own custom RSS feed.
RSS has a strict format which you need to follow in order for it to validate and work with all different RSS programs. You can use
RSS Validators to check what you have coded is valid. It has a XML structure, detailing all of the different parts of the feed and is case sensitive! This is very important.