Top: London Underground Circuit Map Radio by Yuri Suzuki, 2012 (more here, here).
Bottom: The Underground ‘straight eight’ all-electric skit-set circuit diagram by Harry Beck, March 1933.
Paul Mison's random stuff that doesn't go elsewhere. Is it microblogging, or microactivity?
(Previously known as 'tumblr is my sock drawer', for reasons that are somewhat unclear.)