on a forum? the name is to the left, easy to contact.  I'm not sure it is not more dangerous for company trying to use Orphan -as you can then prove it was easy to find you, and so they have to pay all the charges+lawyer+photo- than for the photographers. It can be dangerous for people posting other's photos on their blogs too. They will maybe be responsible of making the owner "hard to find".  Anyway, it is better if nothing like that happens.