I would prefer this so that people who do want to spend time looking for changed referrers or cached copies and such can do so, while others can just skip it or

I would prefer this so that people who do want to spend time looking for changed referrers or cached copies and such can do so, while others can just skip it or see if they can submit a non-paywalled link. Let the submissions float up the ranks based on how people react to the nuisances of dealing with such sites.