Currently, is absent a copyright law in the ghItlh'a'pedia, but copyright's warning is encouraged and violation is discouraged. Try insert the licence status accompanied of the file uploaded, in spite of we are not demanding as the Wikipedia.
Officially, all is licenced under the Creative Commons BY-NC-SA 2.5 licence.
The frequent use of copyright is encouraged when adding works for educationals ends. Remember that copy works from only font is copyright violation. Copy from many fonts is called search and must is encouraged.