I draw your attention to the git tag and its 27 questions.
Git is in no wise a web application. There are a number of web applications (github, bitbucket) with which Git can be used, and we have tags for them for questions about the web interface there, but I don't see how questions about Git can be on topic here.
Looking through the questions, I see quite a few that are also tagged github or bitbucket. Beyond those, I see:
- Integrating Beeminder with Authorea, the latter of which is a Git service.
- A question about Gitlab, which is another Git service.
- A question about whether Dropbox uses a version-control system behind the scenes
- A closed recommendation question about where to host version control
- A question about how to watch a generic Git repository. (Should be closed as "too broad" or as a recommendation question.)
- A question about importing Google Docs revision history into a Git repository
- A question about a failure of a CLI command to push a change to Github. (Should be closed; there's no web interface involved.)
- A closed recommendation question asking for Git wikis that support MathJax
None of these questions need the git tag. Several should be closed, especially the ones that aren't asking about a web interface.
Before I rush ahead, please offer your thoughts on the matter.