Single Management, Multiple Sites Linear is designed to allow multiple sites share data.
For example, if you had 4 linear sites we might add a 5th site to control the other four. From the master site, you could place ads, polls, business listings and more on one or more of the four "children sites".
This allows a group of publications to share a main control site while providing each of the publications their own identity.
Currently, Linear allows cross site data of the following nature:
Single Site, Multiple Publications Alternatively, multiple publications can be run on a single site using a particular Linear configuration. But here, you are limited to targeting editorial, letters and obituaries to particular publications within the same site.
Here is a link to 10 publications sharing a common site - Denton Publication. Check under the menu item "Local News" for the various publications. With thoughtful use of Linear's page layouts and call elements you can deliver individual front pages, but eventually with classifieds, business listings and more you have a shared site.