@Mahz: Still being logged out on browser restart.
@BBeast: For me, it is more logical to see 3h and conclude three full hours and then some than to see three hours which might not be full three hours yet but may also be more than three hours... Similarly, if someone doesn't have seconds displayed on their computer's (or any digital) clock and I see 23:30 there, I'll assume 23:30:xx rather than 23:29:30-23:30:30 - this simply is how electronic clocks normally work, by flooring rather than rounding. And it'd get rid of oddities like 24h and 1d being different things.
But in the end, it is as you said: a matter of preference. My personal reaction tends to be a raised eyebrow when I see someone rounding time.
@BBeast: For me, it is more logical to see 3h and conclude three full hours and then some than to see three hours which might not be full three hours yet but may also be more than three hours... Similarly, if someone doesn't have seconds displayed on their computer's (or any digital) clock and I see 23:30 there, I'll assume 23:30:xx rather than 23:29:30-23:30:30 - this simply is how electronic clocks normally work, by flooring rather than rounding. And it'd get rid of oddities like 24h and 1d being different things.
But in the end, it is as you said: a matter of preference. My personal reaction tends to be a raised eyebrow when I see someone rounding time.