Mashups and datasources
Introduction 
Below, I've put links to a bunch of little mashups and data sources I've built.
Twitter Tube Tracker
The Twitter Tube Tracker uses Twitter and screen scraping to send out data on Tube delays to Twitter.
It was written up on my blog on 22 February 2007.
Below are the Tube lines.
Bakerloo: tubebakerloo (Atom, RSS)
Circle: tubecircle (Atom, RSS)
Central: tubecentral (Atom, RSS)
District: tubedistrict (Atom, RSS)
East London: tubeeastlon (Atom, RSS)
Hammersmith and City: tubehcity (Atom, RSS)
Jubilee: tubejubilee (Atom, RSS)
Metropolitan: tubemetro (Atom, RSS)
Northern: tubenorthern (Atom, RSS)
Piccadilly: tubepiccadil (Atom, RSS)
Victoria: tubevictoria (Atom, RSS)
Waterloo and City: tubewcity (Atom, RSS)
There is also available an XML and JSON feed.
BART Twitter
A few days after I built the Twitter Tube Tracker, I put together a Twitter feed for delays on San Francisco's BART system.
YouTube as OPML
Lets you explore YouTube data using OPML and Grazr. Blog entry.
OPath
OPath is a way to slice up OPML files in to addressable chunks. It's quite ugly and leads to really messy URLs, but it works.
Digg browser
Last year, I wrote a digg browser. The core functionality has broken because of the digg redesign, and I haven't gotten around to fixing it yet. The story was dugg too.
BBC Schedules
I've written interfaces to the BBC schedule data. Writeup. The most useful thing is being able to view this stuff on your iPod.
MySpace Scraper
I was fed up with having to visit MySpace and suffer it's terrible design and irritating user experience just to keep track of what my friends are up to.
So I put together a scraper to extract things frm MySpace. Specifically, it gets comments posted to profiles, school information and a few other bits and pieces. The main use is so that you can get an RSS feed of comments posted to a person's profile.
It's accessible at the following URL:
xml.opiumfield.com/myspace/[username]/[format]
Format can be 'xml', 'opml', 'rss', 'rdf' or 'json'. I'd avoid the json feed. The straight xml feed contains the most information, while the rss feed contains just the comments organised in to RSS 2.0 format.
Remember The Milk Quicksilver script
Under construction! (Or is it 'beta'?) I've built a way to post tasks to Remember The Milk from Macintosh tool Quicksilver. I am not sure how easily I can release this, but I will when I can.