This is an excerpt from Designing Social Interfaces. From the creators of Yahoo!'s Design Pattern Library, Designing Social Interfaces provides you with more than 100 patterns, principles, and best practices, along with salient advice for many of the common challenges you'll face when starting a social website. Christian Crumlish and Erin Malone share hard-won insights into what works, what doesn't, and why. You'll learn how to balance opposing factions and grow healthy online communities by co-creating them with your users.

Less Than Free -- Begins by talking about Google giving away turn-by-turn directions on Android, and then analyses Google's "less than free" business model: Additionally, because Google has created an open source version of Android, carriers believe they have an “out” if they part ways with Google in the future. I then asked my friend, “so why would they ever use the Google (non open source) license version.” Here was the big punch line - because Google will give you ad splits on search if you use that version! That’s right; Google will pay you to use their mobile OS. I like to call this the “less than free” business model. This is a remarkable card to play. Because of its dominance in search, Google has ad rates that blow away the competition. To compete at an equally “less than free” price point, Symbian or windows mobile would need to subsidize. Double ouch!! This and more in today's Four Short Links.

Green Technologies and Interactive Audio are two fields not generally considered related, but a new trend may change that: "Generated Sounds for Electric Vehicles", aka "EV Audio", aka "CarTunes". When I first heard that "electric cars are so quiet, manufacturers want them to make noise", I had a strong memory flashback to 1995, when I was contracted to produce my first ringtone (Fur Elise for Sprint PCS). At the time, I thought "mobile phone plays melody when it rings" was the stupidest idea I'd ever heard of; now, it's a multi-billion dollar industry. If you think audio personalization of your cellphone is an important statement of your individuality (as many do), imagine how much more important personalizing the sound of your car will be!

Muzak grew from constant technological innovation and originally succeeded as a broadcast medium using spare spectrum, a business model rarely examined today.

Stackoverflow releases a monthly XML data dump (CC-licensed) of all the data in their system. Unlike a lot of other data sets that just reflects what developers are buying, this data reflects what developers are actually using and asking questions about, which is pretty cool. I used this dataset to create a topic map that reflects the relationships among the top topics (based on how frequently the topic was used as a tag on a post) for the month of October, 2009. There was a lot of interesting stuff in here. For example, I love the fact that plain old "regex" is the main link between "php" and "c#." Also, it's interesting that only PHP has a direct link to various database topics; I would have expected databases to be more central.

William Stanek here, continuing with the in-depth look at e-readers and e-books. The recap: In my earlier blog entries, I've explored the ins and outs of e-ink, electronic paper displays (EPDs) and e-readers. Now, I'm examining individual readers as a case study in how e-readers work. As I stated in previous posts, my hope is that if you are better informed, you can decide whether e-readers are right for you. So here's another installment in the Sony Reader discussion, focusing on the features of the Sony PRS-700.

Mapsicle -- Is an open source Javascript library to create mashups and application on Google Streetview, from NZ developers Project X. It has been released by Google as part of the Maps Utility library. This and more in today's Four Short Links.

The iPhone, in addition to revolutionizing how people thought about mobile phone user interfaces, also was one of the first devices to offer a suite of sensors measuring everything from the visual environment to position to acceleration, all in a package that could fit in your shirt pocket. On December 3rd, O'Reilly will be offering a one-day online edition of the Where 2.0 conference, focusing on the iPhone sensors, and what you can do with them.

I've been thinking about the topic of Government 2.0 a lot lately. Part of this topic deals with the multi-directional engagement between government and citizens. It seems to me that everyone can celebrate the fact that government entities merely have a YouTube channel here, a Twitter account there, or a Blogger profile some other place (the so-called "TGIF revolution"), or we can think a little harder about what the goals of citizen engagement really might be, and how to go about achieving them.

ICU64 -- an open source Commodore 64 emulator (Frodo) hacked to visually and textually display memory. Watch the video embedded below, it's hypnotic and seductive. It immediately made me want one for my programs (without having to port my code back to 6502 assembler). (via waxy whose return from pneumonia is greatly welcomed)