WIY, re: ‘shmutz” on the internet. Are you speaking from experience? You know, I’ve heard lots of horror stories about the evils of the internet, how it drives kids (and adults too) OTD, how it destroys marriages, ruins lives, etc., but I have never actually met anyone or knew anyone so affected. It’s always, ” heard it from a friend of a guy who knows someone…”. I’m sure that some folks, somewhere have a problem with Internet obsession (not “addiction”. See Just My hapence above) but I just don’t see it as a community crisis.
Re: Filters. If you install a really effective filter on you machine, don’t expect to be able to do useful work on it and do expect occasional lockups. The best filter is the one between your ears.