> Every post should have a set of tags: describing the subject. In the information overload age filtering is becoming essential. You state that as a fact, but it is an opinion. I think using a filter would prevent users from seeing posts and comments that they would find interesting. In a sense, it would create a bubble for each user. Also, HN isn’t that large that a quick visual scan of the home page doesn’t work. >…
Tags are hardly rocket science -- simple rules/standards could be setup. Why do you want to take the choice away from people to use tagging? Someone like me reads a lot (on other sites) and I skip 95% of the content here. Why should I have to scroll through posts about: C++ compilers, etc when I know I'm not going to read it? The tagging approach wouldn't effect you -- you could simply not use it.
Simplicity has its virtues, too.