del.icio.us aggregated feed

For each RSS feed whose items you want to include in the aggregated feed, bookmark the feed’s URL (the RSS feed’s URL and not the HTML page’s URL) in your del.icio.us account, tag the bookmark with a special tag e.g. “aggregate”, and title the bookmark with the string you would like its items’ titles to be prefixed. The items in the aggregated feed are sorted by publication date.