No

I really like Allauthor, and I encourage people to become a free member, but I think the cost for their
promotion is too high. They don't have an email based promotion. It's website based. So it's pretty limited exposure. You get some graphics that they'll send to you with the package. I think it's like 20 backgrounds with your cover. I've used them before a few times for ads. And when you first pay, your book will be at the top of the stack. But then it'll drop down with the thousand of other authors who've paid for membership.
I enter their cover contest on occasion. That's a nice way to get some publicity too. I also throw in my vote all the time.
So, I participate in their site, but I don't see a huge benefit to their marketing.