Syndication - which standard to use

["Paul Aner" <contsyn@web.de>]

Hi there !

I am on writing a Content Management System using PHP. I do also want to
have the ability to share content with others. So I decided to use XML
for this.

When searching the Web for XML-standards I found RSS, NewsML, ICE and
others. These three standards seem to be the most popular.

I think ICE will not be implmentable, because it is based on HTTP-Post.
PHP does
not offer any ServerSockets or something like networking-streams, so
that I think
the ICE-Protocol will not implementable. Am I right with this oppinion
or does any
one know a PHP-based Implementation of ICE.

Maybe I should implement RSS or NewsML. Can anyone tell me the
differences
between these two standards. As far as I read about them, each of them
is to
exchange links to news-feeds. Am I right with this impression ?

Thx in advance,

Paul