I was under the impression that 404 redirects to the front page is considered bad. all websites should have a 404 page. But at the same time I notice alot of people in forums that want their site to redirect to front page when a 404 is called. which is better. Having a 404 error page or redirecting to the front page
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Definitely have a 404 page that also sends a 404 header.
It tells bots when URLs are outdated
It saves you from problems with duplicate content (that search engines frown upon)
It shows users when their URLs are outdated or they typed something wrongly
people want to “keep” incoming visitors by redirecting them to the front page. I’d say this creates more annoyance than good, because it doesn’t give incoming users a clue about the resource they were looking for. A good 404 page, possibly with intelligent links (“were you looking for…?”) and a site map, is the best option.