I've written a little tool (called 'box' after the funky device in Star Cops) that will monitor feeds described in an OPML file, and email you any changes since the last time the tool was run. I've hooked it up to scheduled tasks in Win98 at home, and I'm directing the emails to an o2.co.uk email account, as this free service will direct the emails to SMS on my mobile.

Just type java -jar box.jar to obtain usage statements

The following example would email foo@example.com with new blog/news items from the OPML listed at http://www.bloglines.com/export?username=boxopml

I'd be grateful for feedback (in a comment on this blog)