"I finished your novel in one day."

These are the best words an author can hear! Okay, maybe next to... "We want to publish your novel."
But after...
Once the work is done and you're waiting for feedback from readers...
"I finished your novel in one day." Followed by, "When is the second book coming out?"
Music to this authors ears. Binding Vows isn't exactly a short story either. 300 pages takes a bit of time to consume.

So tell me, authors... what is music to your ears? What do you live for in terms of feedback from your readers?