From the editorial for issue #1:
Open Gaming Monthly aims to bring you content as close to 100% open as possible. We want our readers, and fellow publishers, to be able to build and expand on the content here without restriction. We want to see the content of these pages appear in other publications, in the hope we can create a larger and more cohesive community and shared gaming experience. From what we have learned making this first issue, the community and 3rd party publishers want this as well.
For those who have bought and read other gaming magazines over the years, portions of Open Gaming Monthly will be familiar to you. We have articles covering a lot of the cornerstones of gaming needs, such as new locations, monsters, and equipment. We have also created some entirely new sections, such as utilizing house rules, optimizing classes, industry interviews, and a host of other content.