This is of course highly dependent on the type of application/service/whatnot,
but I've found that reading the release notes of my favorite developing tools etc..
often make me stumble upon nice, interesting or even killer features that I'd probably miss if I did'nt at least skim the notes.....well, perhaps not killer, but you get my drift ;-)
As most computer power users(now what kind of expression is that...)
I never bother much with ordinary documentation, so this gives me
that little something extra something besides clicking, hovering and faq'ing...