Well, I had a good amount of success during my time trading on sythe. I made over $100k USD in less than a year and a half. So during that time period I decided to give back to the site that helped make it possible. I didn't donate all at once. I actually remember my first $25 donation, I thought it was the sketchiest thing because I had to meet up with TBT in game and trade him gold. Over time I donated another $25, then another $50 to become a $100 donor. Over time I just kept donating I guess, it's always a good thing when you help people who've helped you make money.
