I took a look at Cannon's weblog, especially his day 6 tutorial:
I have enjoyed reading Cannon's tutorial on how to create a raspberry pi web server; the layout of the explanations are intuitive and easy to follow. The availability of links for downloading the necessary software is key to this kind of tutorial, and Cannon has posted them clearly and neatly.
I am happy that he posted screenshots, which are definitely useful for both first timers and experts.
I will be very sad to abandon my arduino boards, but the raspberry pi looks like an interesting field to approach. From the weblogs of the team, I have understood that the raspberry pi is a more puristic approach to the subject of computer science. It's a board that can run independently entire operating systems as well as hosting different computing languages.