This forum is an unofficial forum, meaning it is player-made, and the developers of the game do not operate these forums.
Personally, I do not care if you want to buy or sell rubies or other items for real money.
However, there are several risks involved and I would like to point out the Real Money Trades Policy which is posted on the official knowledge base at warpportal:
Real Money TradesRule number one is never, ever give your account details to another player! This will likely lead to bad times more often than it will lead to good ones. We do not condone Real Money Trades. Sellers will have their accounts suspended and Buyers may have their Rubies wiped or even have their accounts suspended if found to be repeat offenders. Please read your User Agreement for further information.
NEOCYON / WarpPortal do not support real money trades, and it is against their rules. So if you decide to do real money trades, such as buying or selling rubies for real money, please be aware there is a risk involved - not only of being scammed, but also being caught by the developers of the game.
From what I have seen, warpportal does not really go out of their way to find ruby buyers/sellers, etc, so in reality the risk of being caught is very low. I recommend you use a different name on the forums than your in-game character name, and use private messages as much as possible - just to be safe. However there is always a risk of being scammed.
I recommend not doing real money trades unless you are fully aware of the consequences, and willing to take the risk.