create new subdomain or buy new domain? seo costs [migrated]
- by greek_no_money
If I am targeting the same audience, but the new sub-site has different concept from the existing site, should I create a new sub-domain or create a new domain?
What are the seo advantages and disadvantages of creating a new sub-domain?
For example Stack Exchange with Alexa rank 1.474 right now, has sub-domains such as programmers.stackexchange.com and other domains such us serverfault.com with rank 3.515 and
stackoverflow.com with rank 109.
So why didn't Stack Exchange put, for example, Stack Overflow in a sub-domain to create a better ranking?