I had this problem in my viewsonic v7 on greader apps. i had a lot or feed subscribed in google reader and used the greader app for viewing it. My problem is that so much feed my tablet show full of memory and my solution is to clear the data or the cache of the app on the settings. I wonder if someone know sometweaks (maybe auto remove cache or data from the tablet or stored the data on the memory card or something like that) or maybe an apps. Something like in windows a ccleaner apps for android to solve my problem.