It's an interactive explanation of a channel vocoder. (Homer Dudley's original vocoder from the 1930s was channel vocoder.) It let you perform all of the steps that the vocoder goes through to analyze a music signal and a voice signal and synthesize them together.
There's many encrypted IM apps, but few of them are actually usable. Subrosa is a web app that abstracts away all the cryptographic details*, resulting in an app you can share and use with everyone. It's open source (of course), and supports IMs, voice and video calls, group chats, and more. *: Yes, real end to end encryption, not 'encrypt with keys the mothership knows'. [more inside]
I've put seven questions together on the topic of clones. There is a tool on the website that lets you record your own answers to these questions. The answers will be edited into the first episode of the Machine Court Podcast, an audio program with sketch comedy and interviews related to technology and ethics. [more inside]
Single serving website that checks if your credentials were compromised in the recent Yahoo Voices hack by calculating MD5 hashes.
I spend a good deal of time in South America and need to keep in touch with work and family, based in the US. Here's some travel communications advice based on what I've learned, most recently from a 4 month stay in Ecuador.