I have not found a post about this so i will post it.
Since patch 3.02 is only a few weeks away you can make tons of gold right when it launches the new profession Inscription will e open to level up and make glyphs. If you are a Herbalist just go and farm all the low lvl herbs you can. Inscription uses Herbs and a lot of people are going to want to lvl it up fast so they more than likely will buy all the low lvl herbs off the ah. Buy them at a low price now and the day before the patch hits...or on that day sale for a huge profit.
Its all common knowledge I know but hey if i did not post it someone else would have.