Here's how it works: You use Siri to send a text to ifttt, and that service can turn your text into a or Twitter post, Tumblr, Posterous or Wordpress blog post, an Evernote entry or any number of other actions.

I don't need to give you the step-by-step instructions here. That's what ifttt does really well. Just follow the on-screen instructions for taking action with SMS text messages, add ifttt as a contact on your iPhone, then use Siri to create and send those text messages.

Most Siri users I know think Siri is lousy at doing email. Here's how email commands usually go:

User: "Send an email."