I discovered Kim Harris’s website thanks to a tweet by Stephen Fry (the two, I learn, were roommates at Cambridge). He’s written only three entries so far, but what entries they are! Christianity: Believe It Or Else is a must-read, and I’m sure you’ll enjoy Harris’s writing even if you ultimately disagree with him. 

I don’t care if he’ll update just once in a month, I’ve added his blog to my bookmarks.