Yes, this is also an important point.
Just picture the following scenario:
—Hey, I want to pay you
—No way, your coins are related to the recent hack!
—I already sent them to your address. U MAD BRO?
It might be ridiculous, but it's totally possible. What will you do then, now that you yourself are tainted too?
This is a great scenario because if you had my little app you could let bitstamp know you confiscated some of their coins and will be returning them immediately!! great example
WHAT?