I am making a media news and reviews site using wordpress. It will contain news on books, movies and tv shows, games etc. Now I plan to make 4 subdomains for the 4 topics like tv.mydomain.com, games.mydomain.com etc. I want all those posts in separate subdomains to appear in http://www.mydomain.com homepage. I decided to use wordpress multisite for this task. but then i saw this on wordpress creating a network codex
"The sites in a multisite network are separate, very like the separate blogs at WordPress.com. They are not interconnected like things in other kinds of networks (even though plugins can create various kinds of interconnections between the sites). If you plan on creating sites that are strongly interconnected, that share data, or share users, then a multisite network might not be the best solution."
Is this not possible with wordpress multisite? Is there a better alternative to do this using wordpress?