There is a profound difference between a watermark and a URL, and if an artist is worth their salt then they should know how to tactfully insert a URL into their image, in a way that will keep it discreet. notes are a non-entity they can not be stolen they mean nothing. Followers are people, and they do not follow a blog just because one image that has been posted so you have no proof that my followers ony follow me due to my “reposted” images, and you also have no proof that these followers would follow the original artist, as they may not have liked his/her blog as a whole.