Today we are launching something called postgroups. We believe that this feature largely enhances the values we provide for bloggers. We have worked very hard to push this out, we are excited!
A postgroup is an invite-only group of blogs that cross-post with each other. Any postreach user can create a postgroup and invite bloggers that they know. This gives the user complete control of whose posts will appear on your blog. A blog can be a member of multiple postgroups.
You can set up a postgroup to invite specific bloggers onto your blog. Or you can set one up about a specific topic and recruit blogs that you like in the topic area.