A PoS distributed messaging system could indeed be interesting and I hope rat4 is considering something like that.
Anonymous chat using addresses seems like a very easy implementation to be honest...
That's so cool though ! Would be sweet if someone put a game on the wallet too? like flappy-... oh wait...
/sarcasm
I'm not a big fan of gimmicks. There are thousands of chatting programs already that do it better. Why fill up the QT code with extra bells and whistles?
I totally agree but this is really not a gimmick but a service that operates the existing ledger and PoS system of BlackCoin. To the best of my knowledge there is no distributed messaging service (i.e. without central server like facebook or google) that works on a PoS basis.
Because this is the blackcoin thread, I'm going to keep my answer short and won't reply after this.
1) There are thousands of free options that are completely anonymous already, while the blockchain is only semi-anonymous.
2)A messaging system is another point of failure. One more feature that is tied into your money directly and cannot be removed. If you want security, then you do not want these extraneous features hard-coded into the wallet or POS system.