We wrote about this service nearly a year ago, and the song remains largely the same: Dial the SlyDial number, wait for the prompt, then dial the person's cell number. Listen to a short ad, then leave your message.
Now, however, there's an optional premium SlyDial service ($2.99 monthly, $29.95 annually, or 10 cents a pop) that lets you bypass the ads and leverage new SlyDial apps for BlackBerry, iPhone, and Windows Mobile.
With the apps, all it takes is a few taps to voicemail-dial a person in your address book -- much easier than entering the number manually when prompted. The apps themselves are free, but they do require a premium account.
What do you think? Is a service like this worth a few bucks a month? I don't think I'd use it often enough for that, but I like the pay-per-use option. Actually, I don't mind sitting through an ad if it lets me dial for free, but then I wouldn't get to use the uber-convenient apps.