Making use of skill points
Mystic Weapons have a consistant demand that’s pretty easy to peg, you may also find some niches in Core promotion. Some of the other mystic forge items can also have a good return on your investment: http://wiki.guildwars2.com/wiki/Mystic_Forge/Other_Items
The market is shifting, best to sit down and look at the TP before you get started and see what feels most viable at a given moment.
thus far, best return on skill points I’ve gotten was 30 skill points for 20 gold, your mileage may vary and that may not be the best use of skill points out there.
http://ec2-174-129-236-8.compute-1.amazonaws.com:8000/gw2sp2g/
You will have to cut and paste the URL sorry. Be warned that I am considering removing the “top 5” because prices have dropped by 2/3s since I published that