The single most useful (and free!!) app I have lets you share info between your desktop computer(s) and your Touch:
http://www.evernote.com/
I’d explain, but they do a better job. Let me just say that it includes a browser (Mac & Windows) clip button, an email (if you use Outlook on Windows) clip button, a desktop app (again, Mac & Windows), and an app on your iPhone or iPod Touch. Anything you save, in any of those areas (and mark for sync) can be accessed from any other of those devices. I am able to save stuff from my home Mac, my work PC, my laptop PC, my iPhone, and my iPod Touch, and they all stay in sync.