This answer features a bunch of blockquotes, with text that came copy-pasted from another website. The text was presented with a link back to the original material, but something about it just doesn't seem in line with what is expected on this site.
It's certainly a good idea to keep the relevant information contained within this site, so that the question does not become unexpectedly unanswered when URLs become invalid. On the other hand, is blockquoting the best option in terms of respecting copyright, preserving the data, and writing a well-formed answer?