While cleaning a bit the hundreds of unread RSS feeds I've got, I've
come to some very interesting articles related to Test Driven
Development and testing in general.
I found too another article about pros and cons of white and black box testing. Maybe too short, but serves as an introduction and gives few advices/tips.
The most interesting thing I've found is an article about TDD Anti-Patterns. It contains a list of anti-patterns, each one with a description.
Quite useful, as probably most of us have done at least one of them (Excessive Setup and The Loudmouth, for example).