Here is my wish list: When one marks a question as favorite or upvotes it, give a chance to: Mark the question with a private tag. Add a private comment to the question. Its length could be limited in the same way as the length of usual comments. Add an option to mark an answer as favorite, es...

I would like to get some reactions to the idea of merging several tags under an umbrella "infinitesimal". The motivation is that the individual tags each have few questions, and the existence of separate tags makes it more difficult for a user to become aware of other related questions. The tag...

I tried to do this myself, but I do not have sufficient privileges to do so. It seems like I cannot even suggest one as a synonym of the other. As a side question, is having an approved synonym the same thing as merging?

Navigating MO, it is possible to view two kinds of questions regarding errors within a book. The first kind are community-wiki questions which answers are a collaborative listing of found errors in a book (e.g.: Errata to Principles of Algebraic Geometry, Errata for Atiyah-Macdonald, Erratum for ...

The tag lattices is a problem since a long time. Over the years there were varied discussions about this, but no clear resolution emerged, though some things were done to better the situation. This is an attempt at a fresh start of the discussion to find a long-term solution. The current situa...