With VBB forum, we can post quickreply quickly. I see it nearly no need to reload page. I wonder which technology is used. Userpost is able to be added immediately, it's so wonderful! I wanna find it to apply my new site. Please tell me the way to do it.

Thanks

It's done through AJAX as a default, but regular server-side coding as a backup for the Javascript-impaired.

yup, partial loading on your page, most probably it's AJAX.