Don't work on what other people think. What they think you obviously will think differently unless its a major exploit, and well we all know how those get leaked and get fixed within hours.
I can say from experience, the best way to earn something is to get it the hard way. If you get a class such as a druid, necromancer, shaman to 60 - (not talking about pop as I quit before it) - you could do anything.
A level 60 shaman could farm WW Dragons if they knew how to play.
If you got a job and your addicted to computers, usually your job revolves around computers.
I had a shaman, I farmed a lot of stuff.. learning where the best stuff that people mostly wanted.. went to my job, made a trader.. and sat him in east commons (this was before bazaar), and I made loads of money.
Back then lodizal shields were about 70k, and shamans if they knew what they were doing could 2box lodizal pretty easily. About 2 spawns a day if your lucky. In a week you get a bag or two full and then you sell it for plat, sell plat online at sites like
www.playerauctions.com or
www.ebay.com
All this work probably sounds like a lot, but in the end its definately worth it.
I don't know about now a days though.. but if your looking for a dupe exploit, or some easy way out of it, you most likely won't find it.
*edit:*
-- I also agree with shawn, all the guides online started with one guy making a decent one that was worth it back 3 years ago. Lazy people come a long and copy, paste them then sell it 2-3 years later and half of it isn't possible anymore. --