Is there an option to approve or deny posts before they display on my GuestMap?

Yes, to do that you can turn on Post Approval. This will give you a chance to screen the messages before they appear to the public in the "Review Pending" area of your service manager.

To enable Post Approval for your GuestMap service, please do the following:

1. Log into your Bravenet account
2. Click on the Web Apps tab
3. Click on "GuestMap" in your list of Web Tools
4. Click on "General Settings"
5. In the Post Approval section select "Yes, require my approval before displaying new posts."
6. Scroll down and click on the "Save Changes" button