Experience is the biggest teacher. It is wonderful that you did a good deed for a person. Hopefully, the person just has a reason not to be on the computer and will make things right by you when they return. I know I am out $42 on one of my transactions, so to prevent this from happening in the future, I usually have the person doing the pleading provide something of value first i.e., I would think I would have a person transfer a buck into my Carbon account before a trade would go thru in the future.