We've now had at least three questions seeking/giving help with a particular tag:
The first one was written with its answer at the same time, and many people (present company included) have found it a helpful guide to writing and solving cryptic-clues.
The second one asks about a single tag (steganography) and generally has pretty good answers. However, the answers aren't necessarily as in-depth as the first one, and the gems of information tend to be scattered around the different answers.
The third one asks about three different tags (cipher, lateral-thinking, pattern). Though at the time of writing the post only has one answer, I think that the important information will again be scattered among different answers, and even more scarcely because of the multiple focuses.
We're starting to venture into 'too broad' territory. I personally think something needs to change. I have had some ideas:
Gradually accumulate the communities knowledge on each of the, say, top-20 tags, and make community wiki posts on all of them
Ask someone experienced in each tag (again, e.g. top-20) to make a post and self-answer on each tag
Close the questions and refer people to the tag wikis, which can then be improved
What do people think?
Feel free to add ideas to the list, and if you post an answer about one of the ideas, link to it