hadn't either, at least until the other day when I stumbled across watchertou.com. It provides, as the name suggests, an application to be used with "voice" and from what I gather, just as we use graphic smileys in our standard IM (Instant Messenger) text conversations, Instant Watcher (free) allows us to use what appears to be emotions that generate sound into our voice conversations or we can even set background music... strange but true
key features below:
*share back ground music with friends
*share call/voice conversation record with friends
*send vioce emotions to friends
*share real time memories
*text to voice ablility
*compatible with nearly all VoIP clients
http://www.watchertou.com