"Parser" said the really wrong thing to me. Notification and normalization seems to be what's going on but you still need to parse the Atom feeds. "Parser" says to me something like http://www.feedparser.org/ . (Kind of by definition, a "web service" to "parse" another web service is absurd.)

I'm not saying this to be critical, just to let you know what I saw when I tried to read your site.