How to generate Del.icio.us OPML files

I've been blogging much lately about how I'd love to see Social Bookmarking services (like del.icio.us) generating browseable tag hierarchies. Then yesterday Lisa Williams found OPML Utils which the developer claims will eventually be the OPML generator.

For now, however, it grabs a user’s del.icio.us account and dumps it into a flat OPML file which conforms to the current 2.0 spec draft. v0.2 will include a hierarchical representation of the tags...

Wow! Imagine plugging that hierarchy straight into the Optimal feed grazer. Now that would be amazing. In the meanime however I can at least view all my del.icio.us bookmarks on the flat.

NOTE: The service didn't look like it was working when I first used it because all I was getting was a blank page. However when I did a 'View Source' on that page I could see the OPML which I was of course able to save.