I just got my ipad and I picked up The Early Edition app which collects all the RSS feeds and puts them in a cool newspaper format. My question is: Do I need wifi to access those articles once I've loaded them up on the ipad? I know that I'll initially need wifi to refresh all the feeds but after that can I read the articles without wifi? That would be awesome since I could then read them on the train on my way to work. Same thing goes for the NY Times app and USA Today. Thanks!