Time Travel

I just came across this story :

"Federal investigators have arrested an enigmatic Wall Street wiz on
insider-trading charges -- and incredibly, he claims to be a time-traveler
from the year 2256!"
http://tv.yahoo.com/news/wwn/20030319/104808600007.html

I was wondering how a markup-oriented time traveller might make a fortune,
and what changes to the past might be good for xml.

Cheers,
Danny.

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http://dannyayers.com