How can I tell Google that multiple domains are related?
Is there any way Google identifies “sister” websites? For example, relationships between ebay.co.uk and ebay.com?
Can I place multiple breadcrumbs on a page?
Many of my items belong to multiple categories on my eCommerce site. Can I place multiple breadcrumbs on a page? Do they confuse Googlebot?
What should sites do with pages for products that are no longer available?
How would Google recommend handling eCommerce products that are no longer available?