Coffee: Starbucks roasts now available in K-Cups.
Crowdsourcing: Explanation, pros, cons and more.
Hacking: Let's make a distributed hackathon.
Node.js: Page scraping tutorial.
NoSQL: An introduction and pros/cons of using NoSQL architecture.
PHP: Zend framework from scratch tutorial series.
Tropo: Add voice, SMS, Twitter and IM integration into your applications.
WordPress: 50 great (and free) themes from 2011.