I'm not trying to put a downer on this, but has anyone considered whether this kind of screen-scraping app is compatible with the various providers terms and conditions for their websites? They may prefer people going via their websites so they can show you adverts etc., and may not take kindly to this kind of app.

I only mention it because sometimes when sites find out about screen scraping they try and block it by user agent, or by obfuscating their HTML code, etc., which obviously is a hassle to work around.