Even if you're not using Bitcoin, having a Bitcoin honeypot on your machine may be a great way to early-detect intrusion. It's such a tempting target for viruses and blackhats these days, I'm happy to sacrifice a few dollars to know that I've been compromised.

I'm using https://www.bitcoinvigil.com/ which is very slick but I may build my own equivalent of this at some point and shove the wallet.dat on all of my machines.