@xecutable 241499 wrote:
Doubt your numbers are as high as mine
. I have over 900+ pages, mostly because during the process of tweaking the website, I’ve changed URL structures, Post Titles, I’ve even gotten rid of posts etc. Links towards your site would also cause 404, in fact I see some pretty old links, toward some non existing pages, that mostly cause this sort of an issue.
To be honest, nothing to worry about as you do not get penalized for it, especially when it comes from a referring site that perhaps scraped you a while ago. You should only worry if the user gets 404 when directly visiting from the SE, cause that would count as bad user experience, and can hurt your rankings that way.
So to sum it up, if nothing is missing nevermind what Webmaster Tools report. I am so used to seeing 900+ not founds that it doesn’t bother me any more.
If you changed the link structure, you should 301 all those to the new strcture, will be an instant help!