An augmented reality instant translation application for iPhone 3GS, iPhone 4 and fourth generation iPod touches. The video on the site really is quite astounding the first time you watch it.

A fantastic gallery of 2010′s most significant events.

Contains information on the theory of relational databases, popular RDBMSs, concurrency control etc. The site has a collection of PPT/PDF slides that are useful for repetition of the main concepts.

For connecting more than half a billion people and mapping the social relations among them; for creating a new system of exchanging information; and for changing how we all live our lives, Mark Elliot Zuckerberg is TIME’s 2010 Person of the Year.

The main article has some interesting statistics that speak volumes for this year’s decision:

One out of every dozen people on the planet has a Facebook account. They speak 75 languages and collectively lavish more than 700 billion minutes on Facebook every month. Last month the site accounted for 1 out of 4 American page views. Its membership is currently growing at a rate of about 700,000 people a day.

The Information Retrieval Methods PDF by Christopher D. Manning, Prabhakar Raghavan and Hinrich Schütze is not only gratis, but a good resource on all kinds of Information Retrieval topics: the boolean model, the vector space model, tf-idf weighting, language models etc.

The Linux Administration Handbook (second edition) is $42.89 on Amazon. From the /proc pseudo filesystem to information on user accounts and GRUB, this book is one of the most comprehensive Linux sysadmin resources I own.