I am looking for a site that will do the following for free:
- Allow me to upload a map of a world (either URL or file, I don't mind).
- Allow me to tag/label that map, to mark the locations of thing (either plain text, or URL links).
- Host the image.
- Let me change/update the image without wiping the tags (as the map becomes more detailed)
- Allow multiple people to edit the tags/labels.
Note: I am aware that I could add the information on my own computer and then load the map up to somewhere like imgur. That is my backup plan.
Note 2: Please do not post answers to things that you think might work.