linkbld

Plugin adds a check box to the Write Post editor. When this box is checked, plugin automatically tweets each new blog post with a link of course. 
Maximum advantage of simplicity. In the WP admin interface, set necessary keys. 
Automatic tweet an older articles with one click. 
If a post is longer than 140 characters, it will be cut down. For most of this area did not take a link to your site, supports plug and Shorten Service bit.ly 
Auto twitter followers stay informed plugin put your social media to autopilot.

Auto twitter followers stay informed

Automatically tweets each new blog post directly to twitter. Get Top backlinks, inform your followers in real time, all on autopilot.

Dachande663

HL Twitter lets you display your tweets as a widget in your sidebar or even browse your entire Twitter history right on your blog. But it also does a whole lot more. You can track multiple Twitter accounts and store all of the tweets on your blog indefinitely (currently Twitter only keep your 3,200 most recent tweets) as well as pulling in any tweets that you reply to for future reference. You can then tweet from your Dashboard or have HL Twitter automatically tweet your new posts with a customisable message.
Twitter 1.1 Compatible

HL Twitter

HL Twitter stores tweets from multiple accounts and displays them via widget, archives and shortcodes as well as auto-tweeting new posts.

Auto twitter followers stay informed vs HL Twitter