Blog Network

I’m interested in creating a network of blogs on a server using WordPress, and offering it as a free service to a niche demographic.

I have found a site that is doing pretty much what I’m looking for ( https://www.blogsome.com ) , and would like to discuss with folks here ways that this could be accomplished.

Anyone have ideas or suggestions for this?

I would like to see an automated sign-up process, and automated installation/generation of the blogs.

Thanks for your thoughts and consideration.