Huh, I thought the person you're responding to explicitly advised the opposite? I.e. - don't cry it out?
We live in a flat with poor soundproofing and out of a desire not to make our neighbours miserable (especially the nurse who really needs a good night's sleep after a long shift..) we've tried to minimize night crying. She sleeps pretty well now.
We were fortunate enough to be in detached housing. If we'd still not been consistently getting full nights of sleep until almost a year after our first one was born (as in the post I initially responded to, I gather) we definitely wouldn't have had two more. Yikes. Our total months of disrupted sleep for all three combined isn't that long.
We live in a flat with poor soundproofing and out of a desire not to make our neighbours miserable (especially the nurse who really needs a good night's sleep after a long shift..) we've tried to minimize night crying. She sleeps pretty well now.