In reply to Richard Rottman.

Agree. A broken link checker would be absolutely needed somewhere under Settings or Tools menu. Maybe it could generate a list of questionable links (and related posts) and one could directly try to reach the link with a button beside the link. If the link is reachable one could confirm it as a working link. If it is not reachable then it could be confirmed as broken. Question is what should happen to broken links in already published posts? Should be just the link removed or even the text as well, or maybe just a strikethrough effect should be applied to the text of the broken link?