1. NULLs. Can't Live with 'em Can't Live Without 'em

  2. Camping.goes :Camping

  3. Squirrel - Once More, with Feeling!

  4. Hiding Visor

  5. Second Refactoring of Security Roles

  6. To Each His Own

  7. Keep Your Mongrels on a Leash

  8. When to Create?

  9. bustin' out JOINs

  10. What's the Deal with Rails' Polymorphic Associations?

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