Thanks for that - and as you'll see above I've always conceded the points about niche leakage and broadsheets/broadsides.. it's a very inexact science, but based on some basic principles of presumed isolation and reasonably identifiable and tracable migrations and cross-contaminations (again, not perjorative).

The point is it is not what it was like, but that there's a clear distinction between the 'g'olden days and the post collection period.

Some scots mix single malt with iron-bru. Nice drink I'm sure, but harder to identify which whisky you're drinking.

Oh, and radio killed the tradio star.