Figured out I would share this incredibly fast and effortless way of making gold in Oldschool Runescape (2007).
As of today (3/5/2013) construction has gone live with the new patch and people are racing against each other trying
to get to 99 as fast as possible (or just generally to raise their total level).
For this they need Oak Planks which can be made from Oak logs, at the moment logs are going for as high as 100-120gb
each. Cutting these is next to as easy as farming can be, just choose a nice non-populated location and you are ready to go. If you
want to, you can also turn the logs into planks which go for around 1k atm.
As a comparison, Willow logs go for less than 20gb/ea and Maples can get you just a little under 100ea if you are lucky. You'd get the
same amount of money from farming lobsters, but this is like twice faster. Enjoy!