So far, I've tried Strictly TweetBot, WordSocial, Tweetable, and WP to Twitter. NONE of them will authenticate correctly. They all say they're connected to my Twitter account, but never post a single tweet when a blog post is published.
I have installed, deactivated, uninstalled, and reinstalled each one at least twice, disconnected and reconnected countless times, to no avail.
I am using WP 3.3.1 with AddThis, Akismet, and WordBooker plugins. Is there an as-yet-undocumented interaction issue with one of these plugins that is holding the auto-tweet function back? Also, I'm on dialup--could this be affecting how Twitter authenticates?
Any info is greatly, greatly appreciated. :)