Any player can edit any page!
Try to inline information instead of just linking to external information. So instead of linking to a guide, try to talk to the author of the guide and see if (s)he will permit copying it here. A link might be better than nothing though.
You should not include information that will remove the joy of discovery for players on MUME. For example, do not post this kind of information:
- Hidden door names
- Output from the identify spell
- Detailed information about how and where to get legendary equipment
- Detailed maps of new/remote/contested areas (detailed maps of cities are fine)