The way I see it, when you buy an expired domain, it makes sense to redirect the old links pointing to the site if they are broken. What's the best way to do this? Using 301 instead of 404? Using a link analysis tool to see which pages of the old site were getting linked to and then setting up a manual redirect for each link? Somehow automatically redirect broken links to your site's home page? I am really kind of lost here - any help would be much appreciated!