That's generally good opsec, but I'm not actually worried about it very much.  If it was 2011 and I was posting with the same nym I use everywhere and that can be tied to my real-life identity, then yeah, that's trouble.  At this point, though, being here doesn't signal much about the size of your stash [1].  I'm guessing the vast majority of us are of pretty recent vintage.

[1] It may signal something about your relative state of mental health, but that's not readily monetized.

elvismercury

bitcoin

Some thoughts on the game theory that results from btc wealth

We should be weary of creating public archives like this and the way we use things like public bitcoin chat groups. These can become resources for attackers. 

We need to communicate, but if you're not famous and holding reputation for a particular reason, changing nyms is good and very cheap. Consider what your random online nym identity is worth? Normally it's not much and they do come with significant cost.