You are right lorelei, but as the original message of this post said, this would be more a marketing strategy to spread Maemo existance and use.

My opinion:
To read that the message was sent from a mobile device is vital.
I'd also go to the "sent via Maemo device" feature.

It would increase the knowledge (maybe only awareness) of the population. And it is possible that more developers become interested in the platform.

Cheers!