Rated 3 out of 5 stars
Reading chm files works just fine, but there are a few things which doesn't work for me. The shortcut for hiding and showing the sidebar does not work. Also if I want to search the content of the chm file there are no results shown, and I have to set the font size for every single page which is getting annoying if you have to switch often between different pages.
The idea is absolutely nice, but for now the microsoft html help reader is more reliable.