I'm glad to see a lot of = 4 digit user ids here. It's amazing how many of us are still around, even if we are not very active.
In the long run btrfs will be good to have, especially with solid state drives gaining popularity. Even embedded devices can easily have multi-gigabyte flash chips, and btrfs would be faster and more efficient on these when compared to jffs2 and yaffs.
and when they shut down WoW, we will have a true revolution.
A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.
However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.