I recently came across the mention of this little feature in a WoW guide that I was reading and thought some people might really benefit well from it.
Many people think that World of Warcraft Community Site is simply a company and community forum (especially people like me who have been playing the game for 5 years).
But over time they have been adding new little features all over the show that can really be helpful.
This way you can see what items and what type of items are selling really well in general.
Just for example you see that a Bold Cardinal Ruby sells very well, and according to thottbot or wowhead etc it sells for 180 gold on average. But now you know that you have seen players advertising normal Cardinal Rubies ingame for 100gold each.
You make the mental click. 180gold - 100 gold - 5g tip = 75 gold profit PER gem.
The ways that this can be helpful is endless, I also found it just a really interesting feature to be able to look at what sells well in professions that I am not familiar with etc.
Hope you guys find some use out of this, don't wait for someone to TELL you how to make gold, take all the tips people give you along the way and put 2 + 2 together.
P.S. if your reply after reading this thread is something similar to:
Then even if you did figure out the true meaning of this thread, it would be no used to you.So...you just telling us to cut gems for a profit?... fail.
You don't meet the minimum requirements: a brain.