Do you want to leave a quick message on the weblog without any form of login or user registration? Use a useful and colourful feature like shoutbox!
A shoutbox, saybox, tagboard, or chatterbox is a chat-like feature that allows people to quickly leave instant messages on the weblog or website.
As I browsed anywhere, one of popular shoutbox service providers is Oggix.com. Frankly, I was surprised that it actually created by an Indonesian young guy!
Check-out my CNET Asia tech post on shoutbox