Here’s a neat way to tweet using Siri, Apple’s new highly-touted voice-control personal assistant app on the iPhone 4S.
First, setup your mobile phone to Twitter so that you can send tweets using text messaging in your Settings, in the Mobile tab here.
Once you’ve received your confirmation text message from Twitter, open up your Contacts app on your iPhone 4S, and create a new contact, naming it Twitter.
Record 40404 as the mobile number and save the newly created contact.
Lastly, launch Siri on your iPhone and give it the following command: “Tell Twitter [your tweet here].”
Props to @tlrobinson