I was reading this [very interesting article on the use of responsive text](http://www.smashingmagazine.com/2012/02/27/ever-justification-for-responsive-text/) to show only critical content on mobile devices by the use of responsive text to show one version for the web and one version for mobile devices. 

I was just wondering about whether this approach is appropriate and if it would be safe to assume that users would want some part of the content hidden from them or would it better to go for an approach where users are given a teaser of the content and then provided with a read more link to go and read the rest of the content.