Cognitive accessibility of user interfaces summarised in an oversimplified rule // plasmasturm.org
The Sapir WIMP hypothesis: "The more easily you can talk about a user interface, the more easily you can understand how to manipulate it."
Link archive: December 18th, 2007
evhead: Will it fly? How to Evaluate a New Product Idea
Ev Williams has some tips for evaluating business ideas, broken down by tractability, obviousness, deepness, wideness, discoverability, monetizability (ugh!) and the all-important "personally compelling" factor.