Read a verbose version of some of the things I've got to say, here are the latest masterpieces:
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Use http://rob-murray.github.io/gb-geojson/ to view, create, edit, transform GeoJSON map data in British National Grid reference system. With gb-geojson you can upload existing GeoJSON, create new features or edit existing objects in either WGS84 Longitude and Latitude or British National Grid Eastings and Northings.
The http://www.captur.im project is a web application that enables you to capture a snapshot of some datasources such as Twitter, News, etc when you like, allowing you to remember the moment or check out what else was happening when you saved your "special moment".
A new-ish gem called london-bike-hire-cli that provides a command line interface to find information about London's Bike Hire stations, it allows you to find stations by name or their ID or a location and retrieve information about the status of a station.
Slowwly is a test service to mock a slow api response - just prepend the Slowwly URL with a delay configuration to your usual API URL and make a request, the response will be delayed. Check it out on GitHub at https://github.com/rob-murray/slowwly.