All the official stuff is published via Twitterfeed, a great service that automatically twits your RSS-entries to your Twitter account. We have a news feed, a blog and a release-log feed, and all of them are automatically published to Twitter whenever a new item appears. So if you have a blog or a newsfeed - Twitterfeed is a must-have tool for you.
Now, I've recently thought of an efficient way to "retwit" (share on Twitter) the interesting links I stumble on in my Google Reader. Usually, once you've found a great article to share you have to (1) click the article in Reader, (2) copy the link and (3) paste that link into your twitter along with the article title... But the best way would be to use the Google Reader's built-in "Shared items" feed.
As you might know, Google Reader offers public access to all your shared items. What is great is that these shared items are also available as an RSS-feed! So all you have to do is to simply "feed" that feed to Twitterfeed and that's it:
