Here are some pages that talk about how to use patterns (or not) in developing software.
PatternsMisconceptions
PatternsAreNotClipArt
SomePatternsQuestionsAnswered
ExtremePatternsUser
ExtremeProgrammingAndPatterns
ImplementingPatterns
LetPatternsEmerge
RefactoringToPatterns
TestDrivenDesignAndPatterns
FormalMethodsAndPatterns
LittleRulesAndPatterns
PatternsForBeginners
ProgrammingWithPatterns
PurposeOfPatterns
SuccessesAndPatterns
DesignPatternsConsideredHarmful (merge candidate)
PatternsConsideredHarmful
PatternSkepticism
PatternsAreDead
[They're arranged roughly by similarity; I plan to come back and add some gloss, but right now, I'm too tired, having spent a couple of hours picking these ones out.--GeorgePaci]