Here's an amusing idea: http://www.theinquirer.net/?article=22959
MIT throws party for time travellers
Dr Who and friends please attend
By Nick Farrell: Tuesday 03 May 2005, 06:50
ONE OF THE great arguments against future technology enabling time travel is that, if it were possible, we would have been already visited by such types.
MIT has decided to resolve the question once and for all by throwing a party, er convention, for all time travellers who may be in the correct time and space, next week.
The party will be held on May 7, 2005, 10pm, at 42:21:36.025°N, 71:05:16.332°W, which is the MIT quad, so you can set the co-ordinates of your Tardis correctly.
Organisers point out that you would only need one time traveller convention as time travellers from all eras could meet at a specific place at once.
Although organising the blow-out is what MIT students do best, they really need some help in advertising the event so that people from the future can make sure they are there.
One of the organisers suggests jotting down the details on acid free paper and inserting them into obscure books in academic libraries or carving the details in stone. CDs will probably perish long before well made print books of the past crumble.
Future readers can find out more details here, but probably have read about it already because it has turned into an urban legend.