I have a few addresses they gave me.
Is it possible to follow the path like that?
Mt Gox was the first exchange, I'm told it started in 2009, at that time on the block chain there should be very few entries as compared to now, so although you can work backwards from now that out again, you can also pretty much start at the beginning.
My guess is many people, over time, will give their mt gox address to help connect the dots
Given that MG was the first and the biggest exchange a lot of major activity pointing to any single direction will probably be them.
'Magic Cards' were never traded on the domain, that was the original intent then along came Bitcoin.
The unused domain was then chosen to become the home of the Bitcoin exchange.
It's one of those 'myths' which people often quote but it's actually quite untrue to say that they used to trade these cards on the website because they didn't.