They have different merits. The various Add to foo links on the PN make it nice for on-site bookmark management, whereas the FN’s unconstrained content makes it nice as a sort of cross between homenode and scratchpad that’s always available. (I know about FN templating, but really, the PN does much of the same out of the box, and I’m getting cranky in my old age and expecting more things to Just Work.)

Makeshifts last the longest.