I just received my Nexus One - will be hooking it up with TMobile tonight. I have an apps account that is my primary everything. I also have a gmail account that just forwards all email to apps. But my picasa and googleTalk are on the gmail account. I don't know what account to make my primary and am looking for some guidance. Is it easy to switch back and forth? I prefer my apps account for contacts etc but I think I will like the googletalk and other aspects of a vanilla gmail account. Thanks.