Yes i know i will get replies about this being common sense and what-not, but it is a quick money earner!
Steps:
1. As a level 55-60 Rogue, head to Scarlet Monastery, enter Library, Armory or Cathedral (Cath best for 59 and 60 rogues)
2. Enter Stealth mode and walk through pickpocketing every mob.(most rogues forget about pickpocket at high levels)
3. My friend made around 50 gold in about an hour by just stealthing through stealing all the greens/blues those mobs had to offer.
4. Some of the drops from Scarlet Monastery:
http://www.thottbot.com/?n=373248
http://www.thottbot.com/?n=246768
Hopefully this helps a little, i know i will get flamed about this being common sense, but i say again: MOST ROGUES FORGET ABOUT PICKPOCKET AND JUST KILL THE MOBS.