Snaskara or Sankhara is a commonly used term in both questons and answers so wouldn't it be nice to have a Tag for it?
You cannot create tags independently on this site. They should be created when asking the question by users who has enough privileges to do this. I believe you wanted this tag added to the following question: What is the process that creates "Saṅkhāra", which I have done. This would add the tag to the list of tags for future use.
I'm not sure I have an answer but here are a few thoughts.
Tags aren't really important for single well-defined words. Take "dukkha" for example: you can find lots of posts by searching for 'dukkha' ... because it's easy to search it isn't very necessary to have a tag.
Tags are useful though for the following purposes:
- Searching doesn't work because of translations -- a post might contain the word 'dukkha' or 'suffering' so it's good to have a tag (see also What language should our tags be in?)
- Tags are good for categorizing -- for example a question about alcohol might be tagged with 'addiction', 'precepts', 'sila', etc.
- Tags are good for schools -- we try to use 'theravada' or 'mahayana' etc. for example when we want the answers to reflect the orthodox perspective from one specific school
- Tags might be useful for users to 'favourite' or 'ignore' -- for example I might decide I never want to read questions which are tagged 'science' or 'kamma', in which case I could add those tags to the list of topics I won't see, in my user profile
A while ago I sanitized the tags on meta (i.e. reviewed and edited every topics to ensure its tags made sense) so I think that all the tags on meta are used in a regular/predictable way.
People haven't done that same job on the main site, so the use of tags there is hap-hazard and random, with people adding tags whenever they feel like it, not using existing tags, not knowing what the existing tags are, not having a grand plan for the way in which tags ought to be used, and so I don't find the existing tags-in-general there very useful/understandable/reliable.
The one bit of clean-up that has ever happened so far is that @CrabBucket reviewed and retagged all the meditation topics/tags (see Proposal for retagging meditation questions and corresponding chat in the chat room plus CrabBucket's corresponding edits to topics).