Until we solve time travel. Then the next thing will be harder...

where I was standing a minure before was not* in the exact same spot.

This isn't necessarily correct. First, without knowing how to time travel, it's really hard to say what the limitations are. If time travel is really just a bending of space-time, then you could come and go any where/when you please. Then there's really no problem. Or, if you had a device (like a Faraday Cage for time instead of electricity) the outside could stay stationary relative to the earth and the inside could move through time.

It's really hard to say, but the problem you propose is really not the limiting factor.

Yea true. Didnt think like that.

I oragnised a party for timetravelers, sent out the invations listing a date in the past... (stephen hawking, apparently)

Most theories of backward time travel require a worm hole which will handle a space-time translation - thus the spatial condition will be solved by the machine which requires you to exit at a wormhole exit - this having a specific co-ordinate in both time and space. I can't think of any theory which doesn't involve a similar exploitation of the nature of space-time (the infinitely long and dense spining cylinder for examples) and thus will give you an exit point relative to where you time machine was in the past...

I've been time travelling for years.
http://xkcd.com/209/

Who are you kidding? Just buy a Tardis! I got mine for 99 dollars last December.

In "The Theory and Practice of Time Travel" Larry Niven proposes that the very large (or even infinite) number of time travellers from the future will cause the future-history of the universe to change wildly until one is created in which time travel into the past isn't discovered anywhere or anywhen. At this point the universe's future-history will stop changing and there will be no time-travel. That is the universe we live in now.

^I need to read that book

*essay

abge is right. Remember that einstein united space and time together.

I honestly don't think time travel to the PAST works the way most people do. I think either it isn't possible, or you just travel to another multiverse (and can, therefore, never return to the one you came from).

Time travel to the future? Well, we already have those. The cosmonaut that has spent the most time in space (Mir cosmonaut, I believe?) has lived like 0.000000001 second less than the rest of us. He's literally traveled something like 0.0000000001 second into the future.

@Haert - If you haven't read them yet, get Niven's "The Flight of the Horse". A series of time-travel stories, with a twist.