Allow unregistered users to post

See scribblerguy’s suggestion here.

Cheers!

That thread is about comments, not posts.

Is it possible to allow users to add Posts without requiring them to register at all? …just go to the main page and Post a new article…

this is a protected internal company blog, so limited risk…

Not really. Take a look at the TDO Mini Forms plug-in.

Addendum:
1. If this is a intranet blog, then you could create an “anonymous” author user account. Then, in the sidebar, just have a text widget with the username and password along with a link to the login page. I’d suggest changing that password and perhaps the user-name on a regular basis.

2. You could also set the default user level to Author. See Roles and Capabilitiesin the Codex. Then, when someone registers, they automatically have the required permissions to create a post and publish.