Hi, I have been reading this forum for awhile so thought i make my first post. Background I have a site that receives over 400,000 visits a month and about 5,000,000 page views a month, The site has over 5,000,000 indexed pages. Problem I been being doing a lot of SEO work over the last few months. I noticed that Google was flagging up a lot of pages as soft 404 after doing some research it came to light that this wasn't good. So i changed it so when a product/item that was listed on the site before and have since gone from the website i will pass a 410 "Gone". Webmaster tools has found 500,000 410 errors does anyone know if that has an effect on the ranking of the site?