You're right, I didn't mean to imply that they're all the same. It's just that when a PDF is openly available, it's often one of the first results, so seeing ci

You're right, I didn't mean to imply that they're all the same. It's just that when a PDF is openly available, it's often one of the first results, so seeing citeseer is a bad sign. I seem to remember them creating pages for citations they didn't have a download link for but now I can't find any examples so I may be misremembering.