Plural vs. Singular and Infinitive vs. Name tags

Question

I see there are several tags that are in a plural form but the singular form would also be acceptable and vice-versa, for examples :

• software
• shortcuts
• applications
• settings
• bookmark

There is the same problem for infinitive verbs and the name derivates from this verb :

• printing
• networking
• charging
• mapping
• sharing

As a guideline for the creation of new tags (and why not also edit the current ones) :

Do tags have to be in a plural or singular form ?

and

Do tags have to be in an infinitive verb or an -ing name ?

Answer 1

Is there an issue with [printing]? I would default to looking at superusers tags to see which seems to be the "correct" tag for this.

Overall I don't think that tags must be plural / singular or infinitive as a general rule. If you see something tagged [share] it should probably be [sharing] though.

Answer 2

About singular vs plural in cases where both make sense; for example:

• app(s)
• shortcut(s)
• podcast(s)
• accessor(y/ies)
• monitor(s)

I'd say plural is good, and that seems to be currently preferred in most cases. However: two observations:

1. In the top tags there aren't that many cases where both make sense. (Quickly I found just monitor and passwords that maybe should be batch-retagged to plural.)
2. We shouldn't get too hung-up with such rule; rather, use what seems the most natural case-by-case.

For the record, plural is what we went with over at English language & usage (where this affects more tags than here).