When this is set to true, a post made through the MetaWeblog API without a "publish" flag will be kept in draft status. When it is false, any MetaWeblog post on this installation will be published as soon as it is submitted. The default is 0, indicating that all MetaWeblog posts should be published.
Most users expect the submission of an entry from a MetaWeblog client to publish the post immediately. If, on the other hand, you want to submit entries into "draft" status, and your client supports it, set this option to 1.