So I won't be wasting my time this year with the Hugos. Don't know yet if I'll try out other awards (Clarke, Tiptree, Locus, etc). But I am in agreement with other bloggers that this may be endemic to popular voting--crowdsourcing wisdom only works as long as the majority of people involved care enough about the topic in question to seriously consider their choices according to their individual judgment. Says something about democracy in general--the trolls have come up with a winning strategy. And addressing them directly with the same tactics still feels like losing. Giving up on democracy also is losing, as it's what the Right wants (see Bastiat).
Still and all, if you want quality awards (as opposed to quality politics), the way to go now is curated awards, and hopefully you find an award (or review source) that fits your tastes and expands them.