If you really want to do this, just point your feed aggregator to the OPML file I’m using for Grazr and get importing. If your aggregator – like Bloglines – expects a local OPML file, you’ll need to right-click that link and use Save Link As… to save a local copy first.
There are 224 feeds to date, and this file includes ’em all, including some that aren’t yet showing much sign of life. Don’t say you weren’t warned.
Link to OPML file: https://www.edubuzz.org/xml/all_post_feeds_20070107_2.xml
Image by tajai.