The YaNC plug in is fantastic. Here is a note on it though some others may be interested in. This bug is logged over at the joomla dev:
developer.joomla.org/sf/go/artf2182?nav=1
Its small, but worth mentioning that you should hide the YaNC
subscribe module to users who are logged into your site. Why? You can not subscribe using YANC subscribe module if logged in through CB2. Some may ask why would you want to anyway. Response, is that if it is a feature on your site, then it should work, so its better to just remove it when logged in. To clarify, I'm talking about the YaNC subscribe module that is unrelated the the CB2 tab for YaNC.
I hope this helps someone else. Everything else on YaNC and CB2 is killer.
- kevin