I am in a situation where I am looking to create another blog, but have it based on an older (my initial) blog. I want to have both, they will have independent URLs but I want them pointing to the same wp database. That is, I don't want them to be independent blogs, I want them basically serving the same blog, but they will on different URLs and have different themes and styles. I will then serve their content by filtering on tags (or categories - I haven't decided yet).
The backstory is that I have a blog that just has generic posts about nothing and everything. I want to create a more specific blog on particular topics (that I have a heap of posts on in my original blog). My older blog has a flamboyant flare about it, whereas I want the new one to be more serious and professional. Rather than duplicating the posts I can filter the content visible in the blog by categories etc.
I have a multisite install and I have noticed that even if you have multiple domains mapped, it is the primary domain only that displays. ie, if you have domain1.com and domain2.net in the domain mapping and domain1.com is the primary domain, that when you go to domain2.net/post/1111 it will go to domain1.com/post/1111
(I haven't tried that for sometime, but that's my recollection).
So I will start with my basic question:
Is it possible to have multiple blogs in a multisite install, serving blogs on multiple (individual) URLs serving (basically) the same content from the same database and have those URLs/blogs filtered on specific content?