• The worlds largest multi-touch wall: "34 million pixels generated by 15 high definition projectors, supported by sound produced by 30 directional speakers"
• Twitter beard!: "just insert your face"
• Why your friends have more friends than you do: "You are more likely to be friends with someone who has more friends than with someone who has fewer friends"
• Cheap, Easy Audio Transcription with Mechanical Turk: "my 36-minute recording was transcribed while I slept, in less than three hours, for a grand total of $15.40"
• Opera Face Gestures: "lets you perform frequent browsing operations with natural and easy to make face gestures"
• Interesting post on design decisions behind Skype Chat, the best IM out there I reckon
• Differentiated presence on GMail chat status, nice touch: "when you know the guy on the other end is using his Android phone, you may decide to send shorter, more concise chat messages"
• How rich are you? Humbling.
• Square looks cute - the use of the headphone jack is particularly lovely, and I could see it getting uptake from smartphone owners (particularly if the customer hardware becomes fashionable or desirable), but I wonder how they plan to get the merchant side of the infrastructure rolled out to the extent that it's worthwhile.
• Via Dom, Appvent Calendar - a free iPhone game every day. Cute.
• The two use-cases of mobile - amen;