I agree that making it more clear & promoting how to join would be good.
The About page talks about the technical requirements, but I found how to add yourself to be a bit hidden.
The short answer is, file an issue / make a PR in GitHub:
https://github.com/TiddlyWikiLinks/TiddlyWikiLinks
The URL of your site must be registered in the sites.json file in the GitHub repository. You can go ahead and add yourself if you know how to send a GitHub pull request, or you can post a message to the forum asking for somebody else to create the PR on your behalf. The information needed in sites.json is:
- Your username
- The URL of your site
I mentioned some ideas about RSS for links aggregator.
Edit: I re-read your post again. I think you were asking if the same link gets bookmarked by multiple what happens? I agree, would be amazing to show all the people who bookmarked it. Hopefully one of the Links creators will give us some more detail.