I would be pleased to hear from you, provided you are a real person and not a hated spambot.
In most cases, email is probably the best starting point. My name is David, you know the domain; my email address is directly deducible.
Also on Twitter: http://twitter.com/papayasoft
Snail-mail, of course, still has its uses. So here’s my mailing address:
P.O. Box 212
Patong Post Office
Kathu, Phuket 83150