It is difficult to gather all the addresses looking through forum pages.
More difficult than hacking Bitfinex? Get a random page number from random.org, go from there. Or hey, find a volunteer to do it 
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So I wrote a script to collect incoming transactions for the following address: 1FvCk1jTsy7AvmnpeKnrfHSJnfX7om7fNM and to get the unique addresses list.
Can you sign another message from 1BfxSuxJqXuizBbTcP238JZY9DT4eqvzJG, to show you're still the same person (after your Bitcointalk password got changed)?