Exactly, i've been using it for years and it made a 30kbs internet speed quite good.
Author also fails to mention sites that already provide you with a fairly good list of ad-sites to block like
this
get that and use as your
hosts file
and to really make this work you need edexter (or other webserver) to redirect to some image of your choice, otherwise sites will open slower since it will always be waiting for 127.0.0.1
Opera (or similar) & a good hosts file is really all you need for fast & safe browsing.