I've seen ads on Silkroad for 10 "anonymised" bitcoins for around 10.6 BTC.
I know bitcoin isn't quite as anonymous as many of us would like, but if it's really this far off, we have a major fungibility problem.
Also, hi, been watching this forum for a while but haven't posted previously.
There are free ways to get different coins, so I don't know who's paying that.
Would you say dollars are not fungible because you might bleed on them or leave other evidence and want to switch them for different bills?