I stumbled across this site a few days ago and thought I should share it here. The author is anonymous and posts as the Masked Offender. From the writing, one could safely assume the Masked Offender is trained in logic, critical thinking, as well a a good dose of clarity. Here's the site description: A Blog dedicated to accelerating the eradication of superstition from the human mind by the presentation of effective arguments for atheism.
Let me know what you think. Here's the link: Good Atheist Arguments
Further, here's an excellent post on secular morality.