[Verginius Rufus]

I remember seeing B.P. in museum exhibits long before B.C.E. started to be more widely used by the politically correct crowd.

It doesn't work well when you get down to historic times where more exact dating is possible...if you expressed the date of the battle of Marathon in B.P. terms you'd have to revise the number every year.

[Drammach]

Actually B.P. has a base timeline...

I believe it is 1950 A.D. ( or C.E., or whatever )