Many new keywords have been added (recently, I think) starting with timeframe-:
We already have other keywords for decades, centuries etc. to indicate the setting, just without the word timeframe.
I tried to delete a few that I thought were misapplied, but was declined. I'd like to know if these keywords were added by IMDb, and if IMDb has any preferences with regard to the use of such keywords?
A specific question is about TV series that stretch across decades. For example, Saturday Night Live has has six decades and two centuries added. I'm not sure this tells the user anything that wasn't already obvious. But also, I'm not sure if this usage is in keeping with the guideline that says, "Keywords submitted to the TV series page should be relevant to and describe the entire series."