I think they should at least be called out and labeled as a scammer. Hopefully it will save some other poor smuck from getting taken.
Depending upon the amount scammed, pursuing it further would make sense assuming you could connect it to a real person.
If I could attach a name and address to 'my' scammer, I would happily pay him a visit if he wasn't too far away.
+1, Apart from I think the amount does not matter, If someone scamms 1BTC or 100'000BTC their still a scammer, Just if its more you might be inclined to find them!