Any macros or macro sets created using the Viking Software are considered derivative works of the Viking Software. Viking360 COM LLC and Einar Offerdahl retain all rights to the Viking Software and to all derivative works. Therefore the users do not have the rights to deny usage of the macros - only I do. As far as I am concerned, macros are for sharing. There are only about 1,300 Viking Macro customers, therefore the sea is plenty big for all of us.
Now obviously it is in good taste to give credit where credit is due. It's also in good taste if you are supposed to have comradeship with somebody, to keep their secrets for them. But legally speaking you can share anything you want (and I encourage everybody to share their macros, the more you share, the better the Viking Macro controller becomes)