Wiki style second post such as Slickdeals.net and FatWallet.com?

[futuredood]

Hey, I was wondering where I can find this user editable second post script that Slickdeals.net and FatWallet.com uses. For example: http://forums.slickdeals.net/showthread.php?t=850301

I've been searching all over and do not know the proper search term. I guess nobody calls it "wiki" but something else..

[futuredood]

anyone?

[Alfa1]

The second post is a normal post. Between the second and third post there is a block similar to a wiki.

[futuredood]

Has anyone figured this out?