Pam was a somewhat pampered prom queen of the sixties who was never called by her full name, which is a pity because Pamela is so mellifluous and rich in literary history. A Top 25 name from the late 1940's through the late 60's, Pamela has just, sadly, dropped out of the Top 1000.
Pamela was first used by Elizabethan poet Sir Philip Sidney in his sixteenth century pastoral epic Arcadia, but it was Samuel Richardson's enormously popular novel Pamela, or Virtue Rewarded two centuries later that really promoted it. Rarely used now, Pamela might almost be ready for a revival, and the appealing Pam (wife of Jim, the male-equivalent name) on The Office may help bring it back.
But no, we won't be recommending the name of Pamela's partner--Linda.