One of my favorite quotes, ever:

"The aim is to 'commodotise the protocol'. By giving the stack away, maybe we can stop everyone obsessing over how to format the bits on the wire, and get them writing applications instead."

Craig Southeren, co-founder of OpenH323, 1998

This guy has an absolutely incredible, pretty detailed list of explainations on how to do all kinds of neat things with a Mac: web serving, MySQL, weblogs, etc. The one thing he stops short on is Postfix.

Here's my guide to setting up Geeklog (1.3.11) on Mac OS X (non-Server, OS X 10.3.7). It's a bit thin but it hits all the high points. Consider this an OS X-specific 'cheat-sheet' addition to the mostly excellent included documentation.