You'll notice that out of 4263 PAUSE ids, 1819 were never used to upload anything. That's over 42% inactive accounts.

Not exactly 81%, but that's probably because a PAUSE id has to be aproved, while a perlmonks account hasn't (which is a bit scary... almost 2000 people had plans, announced them, got their ids approved and... gave up?)

But I don't think there's anything to worry, though. I have subscribed sites myself that I never got to use, has have many around here, probably.