So I have a client that has a newspaper. Im pushing him towards WP with Magazine theme. Now I have to decide what is better for him Multisite or separte WP installations on subdomains? He only has one domain name but puts out different editions for suburbs. Say his site is whatevernews.com I`ll create the subdomains city1.whatevernews.com,city2.whatevernews.com,city3.whatevernews.com etc. etc. What would be the benefit of doing this as apposed to separate WP installations on each subdomain?