Thanks Artwilliams. I thought about the pros and cons of a general porn blog for a couple of days but I thought it would be a good idea to start with a generic blog. This way I could later use the blog as a main page and link new blogs together. But you're right I'll stick with Milf/Asian content at first and save the t-content for the next one
What do you think about subdomains? I can't afford an own domain for each niche so what about gathering each post on the root blog and create an subdomain for each niche?