Despite what people are saying here, I have sold via Moneybookers for 4+ years and have NEVER been charged back. The way the company works, they manually verify ownership of credit cards, and so long as you are being diligent (not doing $500+ orders from randoms) they will cover you in the case of a chargeback.
The fraud which took place on Moneybookers earlier this year involved Italian credit cards, and did cost some users a load of dough. However, the people committing this fraud were not hard to single out. They were buying unlimited amounts above market value, and were relatively unknown.
Tl;Dr - Don't do over $250 to one person and you should be fine.