But there are some that serve a good purpose. And help cut down on needless questions.
You are probably talking about yours and psychoadepts?
But the ones that normal users use are in 99% of the cases an attempt to be witty or funny, a line that my grandmother has on a tile above the fireplace, or some 'bragging list' about stuff they own.
Or they mention software versions they are using, but forget to update their sig when they update the software.
Am I forgetting some other common examples of wasting that space?
Again, I am not targeting the MusicBee forum here.
It's a general observation on signatures and their—usually lack of—practical benefit.
And since spambots seem to have more fun with them than humans, it seems defensible to reconsider their use and availability for new members at least.