In an effort to unify the vast community-made Blender content around the web, the Blender Foundation proudly presents the Blender Community badge.
If you create videos, tutorials, books, or any content using Blender, show that you are part of the community by adding this badge to your thumbnails.
A new section in the branding page goes over the guidelines on how to mention Blender on film credits and when listing Blender among other software.
For the complete guidelines check out the updated Blender branding page.