Thanks to Seanan McGuire's reminder, I ordered my Hugo Awards Supporting Membership with Voting Rights this afternoon. It's definitely worth the $50, even if I don't ever remember to actually vote. There are a ton of resources available to members. As McGuire puts it:

All Supporting Members receive, in addition to Hugo voting rights, a copy of the Hugo voter packet. This includes all the nominated works for the year. Novels, novellas, novelettes, short stories, graphic stories, and yes, related works (so this year, they had to figure out how to include MP3s of an entire filk album—I am a living complication). Strictly speaking, this is well over a $50 value. I mean, the Related Works category alone would probably cost you around $80 if you bought all the physical media, and that doesn't go into the fiction categories at all. So you save a lot, while getting a neat little packet containing electronic copies of what the community thought was best about the previous year. And oh, I forgot to mention there's also samples of the Fan Writer nominees, and art, and and and and...