I am utilizing feedburners for the main discussion forum - you can sign up with your email on the homepage on the left hand side. Those groups featured above have the sign up boxes on their homepage.

You can also now sign up for updates within a select number of parishes/counties groups including:

Bossier Parish
South Caddo
Sabine Parish
Shelby County
Bienville Parish
Desoto Parish
San Augustine
Red River
Drilling Rig Locations
North Caddo

To sign up for the group, go to each groups page individually.