Can you manipulate LLMs with multiple sites?

Hi everyone, I have an interesting concept to discuss, now with Claude or whatever LLM you can build a good site very quickly and host for Free with cloudflare. Theoretically you can create an independent review site populate with user reviews(these are fake) then link to main site just as verify button, a LLM reads it and fully accepts this source(I have tested this and it works) what is the big brain max leverage play with this, like 20+ sites that silently reference each other and can build authority together? or is the usefullness limited to the example i mentioned where it is only seen in direct contact.

Would be interested to hear if anyone has tried anything similar. And to clarify Im talking these sites to be support for the 1 main site.