Not a bad link, but I can see right off the top that it's not great advice (at least in my experience).
Under the topic "What should I decon for what?", he suggests that it's not worth it to decon blue items because the results are 'normal'.
I"m not aware of any other way to get Orbs or Resonating Dusts/Powders. If someone has a secret for this, please correct me.
And if you think that you're going to find enough yellow items on the exchange to do decon, you've got another think coming =)
With the current state of economy (at least on Varking), I'm getting 1G each for 'normal' Resonating Powders that result from blue item decon.
It's almost more profitable now to just break things all day and sell the mats than to focus on any meaningful crafting.