Page is a not externally linkable
Qui_Gon_Jinn - 11:38 pm on Jan 20, 2005 (gmt 0)
It was something Interflora tried to do in the UK, and is used as an example benchmark of how not to & can't do with regard to imposing restrictions on publishers - whether an affiliate or not. To the point where you were not actually permitted to use the word Interflora in an text link or copy.
A merchant cannot prevent anyone from having their brand name within the copy or tags of anyones site. If they did try to impose, they would suffer commercial suicide of their program.