There are so many ways to make gold that each person really has to figure out the type of thing they like. I have not found any magic forumlas but everything comes back to the wow economy for your server. Sometimes I can mkae more money spending an hour with my pally in SM farming small radiant shards (22/hour sett at 8 gold each = 170g/hour), but if the ore/herb prices are up its more efficient to use a gatherer type mod and do fly/gather runs. I have a druid that is a maxed herbalism/miner that I use exlcusievly for this. Epic bird form is the most efficient for gathering as it is instant cast and you can even herbalize in bird form. You can break 250g/hour this way if the prices are up. But the real key to making lots and lots of money is to minimize your time investment. This requires some thinking, but once you have it things can happen quickly. For me, I sell craftables on the AH including enchants, elixirs and gems. I have a spreadsheet that tracks teh raw cost of materials to the actual cost to produce the product, then have a column that detects expected profits if sold at market value. I have a "do not sell less than" price for each item and if the market prices are plunging (usually due to some newb selling for below cost) I just don't post it. I also do not use my own gathered matts for this process (this is important) because if they are a high cost on AH it is better to sell the matts, but if they are low cost is is more efficient to buy them and convert into a high cost product. For example, if you have an enchant that goes on armor vellum II, I will only mill plants that are at 0.50 g a piece to get the violat pigment needed to make the vellum. I will ony buy arcane dust when it is under 18 g a stack, etc. Every day I buy cheap materials (only takes a few minutes) then once a week I take 1 hour and mill -> pigment -> vellum, then enchant 100 or so enchants across the board. (I have calculated the ones with the most profit). For example, I can produce a Gloves - Blasting for 10 gold, but it sells for 32 gold, making it a 22 gold profit per item. I have a character that maintains an enormous inventory of enchants and I usually have about 40 listed at AH on every day. Every morning I wake up and find hundreds of gold in my mailbox. I do the same thing with elixirs. Elixir of spellpower is an automatic 40 percent return on materials. Cuts on gems also have an almost guarenteed return, but the market is more volatile. The trick to making money is consistancy. Even if you made 300 gold a day (and it can be much higher), thats 9000/month and yet most people never have that sum.

Now if I could just stop spending....