Ask HN: What do you use more email vs. Instant Messaging?

Instant Messaging. I can't really remember the last time I used email to really talk to someone.

which use cases could potentially drive you to move the conversation to another form?

The latter. Everything work/internet related -> email. Family / friends -> IM.

So the differentiation is based on target recipient?

Yes. 100%.

Yup same with me.

I refuse to use instant messaging at work.