This is a really good thing; may I add another suggestion to it?
On LinuxQuestions.org, they send me an email every day with the last 25 posts with 0 replies (naturally, this is set in your profile, and I requested it).
It won't help much with the backlog, but it might help with keeping the backlog from getting bigger if these forums could institute something similar.
Heck, you could send me the most recent 25 and 15 random old ones, and it would be fine with me. I check such posts while I drink my morning tea, and do my part with the things I do know, and subscribe to the things I don't know but want to learn about.
To be honest, I would really prefer that LQ sent me about 3 mails day, rather than just the one, since obviously during the course of the day new stuff comes in, and old stuff remains unanswered, and I have to trawl around to find it.
But yeah, I'll help insofar as I can. I can definitely change my sig, so I'll do that in a minute (or right now

).