For b, as he so diligently checks for new stuff. (1) AudioScrobbler checks out what you're listening to, and figures out who you should listen to next. Hmm.
(2) A law&order blog.
(3) Choosing colours for web pages. "Whether it is an impressionist masterpiece, or just wallpaper, if you take the colour juxtapositions and their proportions from nature, you won't go far wrong."
(4) The LoftCube. Amusingly, via playboy. (Don't ask).