We have had several discussions on puzzle-series and common names in titles, the most recent one here.
Now, I would like to propose that we introduce series-xxx tags for puzzle series. The main reason, why puzzle-series have "common names" is to allow easier identification and search, but I think this could be achieved much easier and better with tags
For example, I really think that the "Ernie" themed puzzles deserve a "series-Ernie" tag to have them easily listed next to each other and even do things like RSS feeds or news-alerts should a new one be posted.
I think such series-xxx tags should be used sparingly and only if at least 3 puzzles really belong together (and not only by the same author), but if used with common sense, I can only see them doing good. They all should be series-xxx with xxx being series-identifying so that they can be easily spotted.
Opinions on that?