@Xavier: Normally I wouldn't break this into a joke but...udp isn't lossy; it's *allowed* to be (and that matters):
1. UDP makes a big difference when used for raw speed (like MMO games, where partially-out-of-sync is designed in)...like:
2. RAID 0 for video editing: 'unsafe' but blazing fast response (vs. 'safe' storage) and who cares if a disk crashes; you're editing off a master anyway...or/related to:
3. A search farm strategy: buy a zillion junk computers nobody wants, glue them together with redundant multiprocessing. Crazy fast answers...and if some fail, throw them out - because who cares - the 'best effort' finishers drown out the failures.
The takeaway is: UDP is quick (/reckless). TCP is important (/reliable).
* (/edits after some votes)
