agreed, good questions. Did it convert to something or did they just show up and leave? The answer: neither. They didn't convert into anything really, and they didn't really show up either.
(Yes, I understand that I am being pretty vague about this. Sorry about that. Until I figure my next steps I am not yet ready to share details about the specifics. When the times comes, I will definitely share the full details, whether I am able to convert the traffic into something or not. At minimum, I certainly have a blog post about how I managed to prevent my server from blowing up and how I was able to serve 100 million page views in a month from a single dedicated server.)