I tried testing out these 2 methods of gemming/reforging.
One way I used quick gems as much as I could. (And used haste+spirit to get blue socket bonus and haste+intellect to get red socket bonus.) And after maximizing haste through gemming, I reforged as per the instructions of askmrrobot. The result was:

The other method I used was the reckless gem approach. (I used intellect gems for red sockets, intellect+haste for yellow sockets, and intellect+spirit for blue sockets.) I then used ReforgeLite, telling it to hit cap me and get me to 8085 haste. The result was:

The idea behind the latter method is that you can gem for intellect, but you can't reforge for more intellect, so you should get it where you can. As long as you have enough haste to get 8085 haste, you should maximize your intellect. (more info:
http://howtopriest.com/viewtopic.php?f=19&t=1748)
So which is better? I used simcraft to test. These are the settings I used:

Results for Quick gem method:

Results for Reckless gem method:

So it seems like Woaden is right. I should always gem for intellect as a priority instead of haste. But the difference in DPS was pretty close. (Only 354.4 DPS, or about 0.4%.)
An interesting thing to note is
askmrrobot says BOTH of these fairly different methods of gemming/reforging are "optimized", when one method is superior. I was under the impression that askmrrobot was smarter than that, but it seems like it only checks a few things, rather than test all permutations. The lesson from this is to use askmrrobot only as a 2nd opinion of your choices. Never just blindly follow its "optimized" suggestion.
So I'm going with the reckless method, which is what I have currently. (
http://us.battle.net/wow/en/character/r ... r/advanced)