Deep packet inspection could be useful to ISPs who oversell limited bandwidth to (too) many customers. With Deep Packet Inspection, my ISP could inspect the high-bandwith traffic going to and from my neighbor, determine most of it to be peer-2-peer traffic, and then limit exactly that peer-2-peer traffic so that my neighbor doesn't hog all the bandwidth that we all have to share. On the surface, that sounds like a great idea? Why should my neighbor ruin the internet experience for the rest of us? There's a catch...
I have a dream. I want to write structured documentation and source code together in my text editor and version control both together with git, just like the source code. But have it be searchable, viewable and ideally editable within MediaWiki. Is this possible?
Now, do I want to run Xen? Hmm... I'm using it to host morch.com itself, and I think its great.
Compared to VMware workstation, which is my other favorite, I love that it is open source, and I love that it is detachable. That is, I can start it and don't have any GUI artifacts hanging around. What I do with VMware workstation is start it under a VNC server, so I don't have to worry about the GUI, but this isn't about VMware but about Xen. [I've since learned that this isn't true about VMware workstation - it has become detachable]