It resizes the content fine and it's better suited for reading on mobile than the non mobile website.
However for me, it removes the header picture. Also everything looks black and white so it doesn't seem to carry over the customisation from the actual website. I also have a pop-up installed for first time visitors to get them to sign in and when I use this plug-in (MobilePress), the message is just printed on the page, and cannot be removed nor can people tick the "subcsribe" button...! Seems a few things need to be improved.