This is hard for me to explain so I'm going to try my best. Okay, so I own a forum, let's say myforumsite.com. I get a lot of links pointing to myforumsite.com with my main keywords. Now I decide to create a bunch of mini websites with other themes, let's say wallpapers for example. So I decide to create a wallpaper site at myforumsite.com/wallpapers. Here's my two questions: 1. Will myforumsite.com/wallpapers get better SERPS for being a part of myforumsite.com? 2. Will myforumsite.com itself get better SERPS for my major keywords if I get sites linking to myforumsite.com/wallpapers?