I was wondering if 2 USB self-powered hubs could be joined together without any problems? I have lots of USB devices, but can't find any hubs that are reasonably priced that have more than 4 ports. The 7 port hubs usually aren't self-powered or are too expensive for me. I was hoping that I could hook one hub to another so that I'd have seven open USB ports. Is this possible or just plain idiotic? Thanks for any helpful suggestions.