Opmlmanager is an online webservice that makes maintaining your own opml-file very easy. This opml-file can be a file that is part of a distributed directory, like the ipodder directory, a subscriptionlist, a readinglist, a file you use for taskable.com,
RSSxl is an HTML to RSS converter that will generate an RSS feed from pretty well any HTML web page - with no requirement to edit the source HTML first.