Usually what I do is google specific things that I know Lifehacker is likely to have good content for: "lifehacker + ThingIWantToDo", e.g. "lifehacker + automated media centre" or "lifehacker + hive five vpn".
That throws up the good, older content (sometimes newer/updated content too) without sifting through the crap.
I imagine, but sifting through the content farm-quality junk articles to find those takes away any possible life productivity benefit they would have.