Would be grateful for some help with the following queries - appreciate they are probably very basic newbie queries.

1. I have the RSS 1.0, RSS 2.0 and XML links on my blog. I want to simpify this by having news aggregator icons for yahoo, newsgator etc instead. Which RSS or XML format should I use as the feed to be submitted to each aggregator. What are the pros and cons of each if there are any.

2. I validated my RSS 2.0 feed but it comes up with the following warnings:

    line 26, column 6: Avoid content:encoded (10 occurrences) [help]

          <content:encoded><![CDATA[<p>Title of content
          ^
    line 42, column 4: item should contain a guid element (10 occurrences) [help]

          </item>
          ^

I have looked into what these mean but to be honest it wasn’t very clear what the problem was. Can anybody clarify whether these need to be rectified considering they are only warnings, and if so any I ideas how I correct them?

3. My XML feed does not validate at all and comes up with a number of errors including: “This feed is using an obsolete namespace used by an obsolete snapshot of Atom, which is not supported by this validator.”  How do I rectify this? Is there upgrade I need to download?

Any help greatly appreciated.

Cheers.

I’m having issue #2 as well, and have been searching for a solution.  The only workaround I’ve figured out is to add a guid tag inside the item tag, with the content of the guid being the permalink to that particular entry.  From what I’ve read guid is a unique ID.  I added it, and got rid of the second warning message you reference above.  But the feed validator still doesn’t like the content:encoded tag.