Bandwagon, the clever automated iTunes backup service (with a future promise of synching libraries), has certainly been making the discount news lately. Last week they whipped out a deal with DreamHost customers, and now their $24/year service is only $12 at MacZOT today only. I haven't had a chance to leave Bandwagon reliably running to get a good feel for how well it works. For the limited time I've been using it so far though, it has reliably been backing up my iTunes library to my FTP space at the steady upload bandwidth limit I set, and I'm on song 51 now.
While everyone at TUAW recommends you secure a good backup solution for all your data, Bandwagon is a great, simple option for alternatively backing up your iTunes library to FTP space that's just waiting for something to store. If you're interested though, you'd better jump on the deal because MacZOT offers discounts on each app for one day only; when they're gone, they're gone.