Razesdark

This plugin will allow all authors to have their own tweets shown on in the widget area of their posts, by adding it to their profiles. 
That way any multi-author blog can let their bloggers promote their own twitter account and not a joint account.

Author Based Twitter Widget

A Author based twitter widget, made to help multi author blogs have individual twitter widgets for their authors.

David Miller

Auto-Schedule posts catches posts as they are published and holding them until the previously set criteria are met for the proper publication time.
You can set publication between certain hours, limit publication to certain days, and specify a minimum time period between posts.

Auto-Schedule Posts

Auto-Schedule Posts allows users to separate their writing schedule from their publishing schedule - write when you want and have posts publish at the …

Author Based Twitter Widget vs Auto-Schedule Posts