I've found a problem on GWT. When I click on 'Page with external link' under 'Links' tab, I found one of my page has 300 external links. But when I click on those links it showing the following "Oops! This link appears broken. HTTP 404 - File not found." what should I do now? will I delete my that link. Is this error against SEO? Please help me soon.
Are you sure that page wasn't hacked at one point or another? A while back I had someone hack into my websites and leave many hidden footer links on each website. If this error isn't affecting your rankings, I would just ignore it.
If you remove any post from your site then the links will be break ...Find out weather you did any thing ?