Really nice idea. I've hacked countless snippets of perl to do this for me in the past, so would love an app that would relieve me of this task.

One suggestion -

I used http://www.junction.co.uk/HTMLTemplates/whats_on/music/dates...

but it kind of got the wrong idea about which bit of text was important.

How about extending the post-process ("Events I want / Events I don't want") page so that I can give some hints to the app about which bit of text represents the event name / date / time etc.

keep it up, guys.