Please add the possibility of template override conditions for content/tipafriend.tpl and content/tipafriendmail.tpl:

object - Matches the ID number of the object.

node - Matches the ID number of the node.

class - Matches the ID number of the class which the object is an instance of.

class_identifier - Matches the identifier of the class which the object is an instance of.

class_group - Matches the ID number of the group that the class which the object is an instance of belongs to.

section - Matches the number of the section which the object belongs to.

...where the object in question is the object being "tipped".

Thanks
Matthew