Does anyone have any awareness or knowledge about Google spotting links and content on Flickr photos - like the comments posted for photos and albums? I'm pretty much against just in-your-face spam - but have no problem whatsoever if people have a link in their signature, and actually post a comment that's on-topic. Folks have commented on my images before with signature links, and it's fine with me, because it did not look like an ad. But I was wondering if those might be related to search results.
Every comment at the ends is just more content to that particular page and it's good for the site owner though.. However, "nofollow" links might be helpful in indexing the commenter site but wont pass juice