Some kids at MIT are having a Time Traveller Convention this evening. Their intention was for it to become so widely publicized that it would be remembered far into the future, so that if time travel is ever invented, people can travel back in time and attend.

They've specified exact coordinates for the event in latitude, longitude, and time. However, a few things worry me. First of all, they don't specify altitude (i.e. distance from the center of the Earth). Warping in just 50 feet off in either direction could be unpleasant. Another thing that needs to be taken into consideration is that the Earth is travelling at 30 km/sec around the Sun. Being just a few seconds off in your calculations would place you in the bitter cold of space. Even if you do match the speed of the Earth, you need to consider its rotation, and warp in with the right amount of lateral velocity. At the equator, the surface of the Earth revolves at 1670 km/hr. Warping in without matching that speed would send you flying into a wall at around Mach 1.4.

One last concern, as pointed out by a Slashdotter:

Seeing the location depicted so accurately, I have only one fear...

Telefrags.