Monitor a WP website

Hey, Is there a way to check if a new post has been submitted on your favourite wordpress site? Heres what i am trying to do: do a fopen http://ezee.se/articles-blog/ via CRON every x minutes if a new post has been submitted, i mail someone... but am not just looking to do this for this one site... am thinking other WP sites too, but am hoping if i can get this to work on this one site.. the others should be pretty much the same. Any suggestions on how to check for new posts? keep in mind most wp sites use some kind of url-rewriting so the formats a bit different (there are around 7 formats if i am not mistaken) Thanks! R ------ - The faulty interface lies between the chair and the keyboard. - Creativity is great, but plagiarism is faster! - Smile, everyone loves a moron. :-)