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Hoping someone can answer this for me, as I have spent a ton of time researching with no luck... Is there anything misleading/wrong with using multiple rel="alternate" tags on a single webpage to reference multiple alternate versions? We currently use this tag to specify a mobile-equivalent page (mobile site served on an m. domain), but would like to expand so that we can cover another domain for desktop (possibly mobile in the future). In essence: MAIN DOMAIN would get The "Other Domain" would then use Canonical to point back to the main site. To clarify, this implementation idea is for an e-commerce site that maintains the same product line across 2 domains. One is homogeneous with furniture & home decor, which is a sub-set of products on our "main" domain that includes lighting, furniture & home decor. Any feedback or guidance is greatly appreciated! Thanks!