Ask HN: an archive for RSS feeds (similar to the wayback machine)?

I thought an archive for RSS feeds (similar to the wayback machine) should exist. But I couldn't find any.

RSS would be a minimum common denominator for the web. When pulling an RSS feed, omehow you can only access the last 20 posts or so; I don't think this is a limit that the protocol imposes (it's rdf after all) or a custom, but the fact is you cannot get an old article from an RSS feed.

Feedburner (RSS kings) don't seem to have an archive, at least one I could find.

Do you know if such a thing exist? The main advantage of RSS over scraping is that there's little noise due to formatting, TOCs, ads, etc.