Aside from Zinio how do you find magazines for sale for the iPad? I typed in 'magazines' in the iBook store and only a few popped up. I tried the same in the App store. I know they're there, but why is it so hard to find and why doesn't Apple have a section for magazines? The Kindle store is easy to find magazines but most indicate they are not for the iPad. I cant just enter every possible name. Any help navigating the Apple sites?