This is a scam. THey say it increases gold drop rate, which is true but its client side only.
Here is a link to their website GOLDBOOSTER.COM
they charge up to 18$ for their program.
This is what showed up on my debit card statement, feel free to harass them as I know I will.
Processing: Debit/CheckCard WOWAUCTIONBOOK.COM 206-529-4489 GA
Here is a link to the download which I did pay for and they won't return my emails about a refund obviously. I uploaded it to a free file hosting web site. Feel free to DL and play with it.
goldbooster_premium.zip
What it does it make it look like you are getting more gold, but when you go to buy something or mail it to an alt it will say "you do not have enough gold to do that". When you turn the bot off in your addons section it will show you the amount of gold you actually have.