Here's a podcast for anybody wanting to understand the basics of developing an on-line community or social networking or web 2.0 application. Covers both technical, rss and tagging, and the social aspects, trust and participation.
From Knowledge at Wharton, Podcast: What Makes an Online Community Tick? Ask Craigslist, Yahoo and Pheedo. (registration required)
For any person that is interested in developing a website or any piece of software for that matter, they need to check out the oss projects that are scattered all over the net. Check out the leading tags on del.icio.us to get started.
How Linux Could Overthrow Microsoft by Charles Ferguson, from Technology Review.com - " With some improvements, the open-source model could even become the dominant global production model for software."