I clicked on "site self-evaluation" and generally understand the idea.
However, I think the text needs some explanation.
Run comparative Google searches on these questions
I think I'm quite good in internet technology, however "comparative search" is a black magic for me.
PS. Yeah -- You can say I can search what "comparative search", however it seems that it is not that clear. The first link in Google leads here. In my opinion some words more would be perfect, how to perform this and what one gets.