Type I: Describing how to use some kind of technology, your own or someone else's
Type II: Describing how to overcome some limitation, bug, or quirk of technology
Type III: Whining about failures to get one or more technologies to work (together)
Type IV: Crowing about getting one or more technologies to work (together) - often a follow-up to a Type III posting
Type V: Indulging in a post that really doesn't belong in a technical blog.
For a classic example of a Type II posting, see: