[Phpwm] RSS Feeds

[pete graham]

Hi quick questions I wasn't sure about,

Does a rss feed need to be in a certain place on a site so rss readers
(such as google reader) will find it if a users only provides the
sites domain as the feed location?

Or do I need to add markup to the index.php pages header such as this:
<link rel="alternate" type="application/rss+xml" title="RSS 2.0"
href="http://<?php echo $_SERVER['SERVER_NAME']?>/rss/index.php" />

Many thanks,
Pete