This was an email. I'm not sure where he is from, but he found my email address.
On Sep 26, 2010, at 9:43 AM, Dave Quillopo wrote:
subject: thank you for the free math video lessons
Hello ma'am!
I'd like to thank you for the free math video lessons that you've created. And thank you for making them accessible to everyone. God Bless you always and stay cool