NY US Attorney: $28M in bitcoins seized
sfgate.com
sfgate.com
This is also great, from that article: "Reddit has located what looks to be the FBI’s Bitcoin wallet...Now members of Reddit are starting to use the wallet as an email address, sending it tiny amounts of Bitcoins along with public messages, which can be read here (http://blockchain.info/address/1F1tAaz5x1HUXrCNLbtMDqcw6o5GN...)." It's been colonized by spammers now.
It's something that really would have to be done in the client, and for it to work everyone would have to agree to use the "official" client (or code derived from the official client).
My suspicion is that it would actually make client fragmentation more likely as there would be a clear financial incentive to deviate from the standard.
With Silkroad -> "Oh BTC is only used to buy drugs."
Silkroad shutdown -> "Oh I can't wait until fanboys can explain how this is a good thing for BTC."