[iampims]

It’s a known trick for spammers to leverage the amazon domain to rank higher in search rankings.

[driverdan]

That's a search engine problem, not a hosting problem.

[bayareanative]

Virtual and path style share the same domain suffix. It's also *.amazonaws.com, not amazon.com.

[willglynn]

Public suffix list: https://publicsuffix.org

s3.amazonaws.com subdomains are as distinct from each other as co.uk subdomains.