More often than not links in articles work and provide valuable information. But I really hate it when I come across an accepted SE answer, and it mostly consists in a link to the poster’s defunct blog. Even if the link works, I feel uneasy that the poster didn’t bother copying and formatting information.
For instance, on this question I think the accepted answer is not very good, but it gives direct advice. And this answer doesn’t really answer the question, but it provides much more interesting information; the problem is that you have to click the links to see it.
Should we encourage that second poster to copy information from his blog back on SE, or is only the link OK? What happens when his blog dies?