Nothing much, as you can see invalid transactions are pruned (the url won't work or "21 mil btc fees" get "fixed").

No seriously, Im not making that up! It was there just then (the Satoshi Dice tx), when I hit refresh, it was gone!
Obviously some error blockchain.info cleansed (look at the 2 million BTC fee in a supposedly 2k BTC tx --> impossible).

Look here, I took a screenshot of the 21M BTC tx (obviously some error/prank as well):



I still have the tab open where it says:


when I open the page in a new tab however, it changed to:

Also the they changed the txID to:  bb0035f8b02f7e716d14a90505ffdf00e4b71a3e6030c41abebf7129915bd42a

The URL for the old and new version is still the same:
https://blockchain.info/tx/bb0035f8b02f7e716d14a90505ffdf00e4b71a3e6030c41abebf7129915bd42a/bb0035f8b02f7e716d14a90505ffdf00e4b71a3e6030c41abebf7129915bd42a

So you saw it too! Chew, Im not insane
What kind of prank is that then and was it possibly commited by the BIG address owner or someone else?

Look at the ouput volume of the last sent tx from the BIG address: 0.011101 BTC

Could this be the beginning of some genuine binary message?
Receiving address: 1GMaxweLL.. something seems to be a vanity address just as a side note.

It's gmaxwell's address: https://bitcointalk.org/index.php?action=profile;u=11425
He has it on his signature.

It's cool 2 read public note on that address

No seriously, 21 million btc invalid transactions, it ain't happening.

Also:

Pity no-one has a (publicly available) tool to watch/track the coins, start to end, as they float away..

None from my research.

Though it would be nice to see opinions form others who have likely looked into it more thouroughly than I may have.

Except Micon...