ah tibs, i have no idea about the night feeding thing. the stupid books say they don't need night feeding after 6 months, but 'need' is such a subjective word.
i'd say it depends what you can cope with at night. sometimes it is easier to just latch them on the breast and go back to sleep, maybe you get more rest that way. but then you're also building that as a pattern. for me, i tried to ascertain when LO wakes at night and i try to feed him, when he actually seems to take a lot in. i don't know if this makes sense, but sometimes you can here the gulping and the milk going in, othertimes its just slow sucking in order to go back to sleep. anyway, i found that if he has a gap of at least 4 hours between feeds at night, then he will likely do the gulping thing, so i try to feed only 4+ hourly, though sometimes i give in if he's being really unsettled.
in some cultures they do sleep with their babies for quite a long time and its expected that they latch on and off allthrough the night. and that's when breastfeeding as contraception is at its best when feeding is very frequent esp at ngiht. and i suppose having a baby in your bed is contraception in itself
so anyway, i have no authoritative advice for you, just my experience. there's so many reasons a LO will start to feed more at night and not too many easy answers...