How do you notify Twitter of your new blog posts? Do you add the post manually, use Twitterfeed, use Twitter Tools, or do you use something else? Personally, I use Twitter Tools for WordPress. Not only can you set it to send your new posts to Twitter, but it also contains a number of other useful features.
Twitter Tools is a WordPress plugin created by Alex King that assists me in using my Twitter account from within WordPress. Below is a screenshot of the settings. The settings are accessed in WordPress via Settings > Twitter Tools.