Paypal chargeback

Many people are selling digital goods through paypal.
The danger is that the buyer can get the money back even though you delivered what you sold. Paypal seems to not give a big fuck about digital items.

Now how exactly does it work? Did someone have this happen to him/tried to do it himself? Can you just claim the money back or do you have to stage a hijack of your account?

Any ideas?

Thanks in advance

could try not stealing and earn the money instead hows that sound....