I fear no evil for I am fear incarnate...
OK here's what I did before I started being more interested in the social aspect of gaia rather than the wealth aspect. You post in bump forums like crazy while in another tab on your browser you're commenting on your friends' profiles. Then on another tab you're voting in the arenas and finally in 2 other windows you're both fishing and playing jigsaw on hard mode and that should earn you a good 5000 gold a day without really having to think. I got most of my gold vending though but that requires practice and a hefty sum of gold.
...The only thing to fear is failure.