Yeah, it only became a problem for me (and noticed months later) when people involved in other matters started Googling me and noticed psy's post. Anyway, I have one main address where I receive all my coins at and it's in my signature. Getting into Sent-from addresses is a great suggestion but I'm sure it's not worth all the trouble. I'm leaving this alone for now. I've had someone who lends massive amounts of Bitcoins vouch for me
here and I posted it in another thread. I understand Psy had good intentions but his findings are easily explained (BTW, I needed help with Postfix because I was setting up the mail server on my VPS... I've since become a certified Sysadmin who does that as a full-time job), and the conjecture or suspicion sullies my reputation and Google results -- which normally wouldn't be THAT important, except, as an internet activist, in order to get others to trust and work with you, you generally want to have a record of ethical behavior and nothing malicious said about you by people within your community. I would have liked (and did ask for) an apology or edit/scrubbing of post, but that said, it is a lot of work to prove a negative to him. Personally, I haven't even followed the Bitcoinica hack much because I neither trusted or used the site to begin with -- and I was under the impression that ya'll had since identified the hacker, or that it was Zhou Tong himself or maybe his Chinese associate. Peace.
If you want to clear the smoke, ask folks to whom you've sent bitcoin to speak up and give us the addresses from which you sent it and we can use the taint analysis at blockchain.info to see how little (if any) of your bitcoin came from the hack. With your good rep, there ought to be several folks who'd be willing to vouch for you in this way.
Assuming you have made great contributions to the community, I should point out that the most powerful criminals in history (the US government (USG) is probably the best example) have a habit of contributing a great portion of their time and loot to getting in good with the community around them. It makes the thieving a lot simpler. So it doesn't work very well as a defense.
But the easier path is just to ignore all this. That's the path the USG took with regards to 9/11. If you are guilty, that's a good delay tactic, and if you aren't, eventually it won't matter, so why worry? I agree with the "You're making it worse by the minute" comment.