RSS feeds usually have a tag structure like this:
<rss version=“2.0”>
<channel>
<item>
<title>Some title…</title>
<description>Some description…</description>
<link>www.somelink.com</link>
<pubDate>Mon, 08 Mar 2010 10:01:09 AM PST</pubDate>
</item>
…
…
But when I looked at source code of Sitepoint’s RSS feeds, I found a new type of tag structure:
<feed>
<entry>
<title>Some title…</title>
<link rel=“alternate” type=“text/html” href=“www.somelink.com”/>
<author>
<name>Luke Moulton</name>
</author>
<id>www.somelink.com</id>
<summary>Some description…</summary>
<updated>2010-02-03T03:09:10+00:00</updated>
</entry>
…
…
Now why we have 2 different types of XML structure for RSS feeds? What is the significance of both structures and which structure is better?
Thank you for your help.