If I tell Siri to send a message to one of my contacts, it will send a text message (SMS) to their mobile number if one is listed. If there's no mobile number, it will send an iMessage if they have an iMessage account. So, for example my daughters both have iPod Touches and my older daughter also has a mobile phone. If I send a message to them both, eldest gets an SMS on her mobile, youngest gets an iMessage on her iPod. However, I'd prefer the option to be able to specifically send an iMessage or at least use iMessage in preference to SMS, but their doesn't seem to be a way. Siri even understands if I say "send an iMessage to..." but it still sends an SMS rather than an iMessage if I have a mobile number for that person. Anyone found a workaround?