Possibly the slowest one but the most secured way I saw was you buy around 76+ Gold players for 300 maximun price and then quick sell them, you'll get a 4+ coin profit each time, if you got alot of money to start with you can make it quicker. its probably the slowest way to make money but quick effective and assuring. I don't do it myself but my mate did it.
Posted on Sunday, 23rd October 2011