What is a Wiki?

This is a link to a post about what a wiki is and its application in higher education. It's a transcription of a lecture so it reads in a conversational way.
http://www.ikiw.org/2006/12/23/transcript-of-drexel-talk/

How do mics sound different?

This page has an interesting discussion of mics. Although the page is geared towards Macs (it's an Apple page after all) the side-by-side comparison of dynamic vs. condenser with audio examples is good because somebody can actually hear the same audio recorded with different types of mics.
http://www.apple.com/pro/techniques/microphones101/

CSS Footers

An article about creating footers in CSS (and it's a crisp looking site as well):
http://alistapart.com/articles/footers

CSS Floats

Here's a tutorial about CSS floats:
http://css.maxdesign.com.au/floatutorial/