There are also some examples of different feed types in the Feeds
Protocol guide -
http://code.google.com/enterprise/documentation/feedsguide.html
For multiple URLs, enter each URL as a separate record, all within the
same group. The Web Feed:
<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE gsafeed PUBLIC "-//Google//DTD GSA Feeds//EN" "">
<gsafeed>
<header>
<datasource>web</datasource>
<feedtype>incremental</feedtype>
</header>
<group>
<record url="http://www.corp.enterprise.com/hello02"
mimetype="text/plain"/>
</group>
</gsafeed>