Concerning self-plagiarism

See --When is self-plagiarism ok? -- which concludes:

Even with these programs, however, editors must be careful, Bailey warned -- even high degree of text similarity can sometimes be legit. "It really is about context," Fennell agreed. "It's good software, but it doesn't replace human judgment."

The problem now is how to weed through the hundreds of thousands of suspected cases of duplicated publications currently in the scientific literature. "It's one thing to be a deterrent and preventative in the future," said Garner, but "who's going to clean up the mess that's already there?"