Week 8, question 2

Question 2, part of Week 8 for Project Play
I looked up two things. With dogs, I ended up on the same website whether I clicked on title, tags (I tried multiple tags), or saved by. With TV, when I clicked on title and saved by, I got the same website but when I clicked on a tag, I was led to other websites on similar topic.

Am I right, that the number of saved by is for del.icio.us or is it the website I was at -- meaning I clicked on a dogs title from Menasha PL's site and got over 800 people had saved that title -- is that 800+ people saving it from del.icio.us or from visiting the Menasha PL website? Anyone know the answer for sure?