I don't use VNC or Mac OS X (sadly), but isn't this a delightful name for an application?
Lately I've come across several examples of bad usability in "Contact Us" forms. The problem is that when you submit the form, there is a post back to the server, the page refreshes and what you see is the form again, plus a small "Your message has been sent" message somewhere in the page. This is a problem because it is difficult to notice the feedback message. And it's easy to get confused and think that the website has somehow lost the message and is prompting you to re-enter it to the form. I ......
I've found a very good BitTorrent FAQ site.
The best part is a list of technical terms explained - Finally a good explanation of all that voodoo.