The article mentions sending SMS invitations and shows as an example the case where the user apparently did not mean to send the text message. Do text messages

The article mentions sending SMS invitations and shows as an example the case where the user apparently did not mean to send the text message. Do text messages cost the user money in the US, too? In Europe, they do, and while it's not a big amount, I would be furious if an App just sent out a text message on my behalf without making very sure I wanted to do that. It's both my reputation with my friends and my wallet they're damaging here. So SMS "invitations" seem to be an extremely risky move to me.