A couple of nice "meta" websites for scientists and skeptics.
Why is Science Important?
It features a variety of scientists answering the question. Kind of a scientists' "This I believe."
What's the Harm?
Skeptics are often waved off with this question. Badmouth astrology, homeopathy, etc., by citing their lack of evidence, and adherents and sympathizers will say, "Well, what's the harm? Belief X doesn't hurt anybody!" Turns out, it actually does. This website provides the often-sad details.