[granitepail]

You're generally spot on, but I figured I'd clarify a bit of terminology since it can be so confusing in our field. Generally, TCP is referred to as a "stream" based protocol because it guarantees, amongst other things, that all packets will arrive in the order in which they were sent, as you've mentioned.

UDP _is_ great for "streaming" data, meaning data sent piecewise over a continuous connection (or, at least, emulated connection) because packet loss / reordering is an acceptable loss, since a minor blip is less destructive than pausing the video. In this type of setting, packets that arrive out of order (i.e. a packet that was sent earlier arrives after a packet sent after it has been received) are thrown out and the process keeps on chugging.