I'm not clear on the youtube violation. What do you mean?
This is from the iPhone terms of service:
http://www.wireless.att.com/learn/articles-resources/iphone-terms.jsp
Prohibited and Permissible Uses: Data Service sessions may be conducted only for the following purposes: (i) Internet browsing; (ii) email; and (iii) corporate intranet access (including access to corporate email, customer relationship management, sales force automation, and field service automation applications). PROHIBITED USES INCLUDE, BUT ARE NOT LIMITED TO, USING SERVICES: (I) WITH SERVER DEVICES OR WITH HOST COMPUTER APPLICATIONS, INCLUDING, WITHOUT LIMITATION, WEB CAMERA POSTS OR BROADCASTS, CONTINUOUS JPEG FILE TRANSFERS, AUTOMATIC DATA FEEDS, TELEMETRY APPLICATIONS, PEER-TO-PEER (P2P) FILE SHARING, AUTOMATED FUNCTIONS OR ANY OTHER MACHINE-TO-MACHINE APPLICATIONS; (II) AS SUBSTITUTE OR BACKUP FOR PRIVATE LINES OR DEDICATED DATA CONNECTIONS; (III) FOR VOICE OVER IP; (IV) IN CONJUNCTION WITH WWAN OR OTHER APPLICATIONS OR DEVICES WHICH AGGREGATE USAGE FROM MULTIPLE SOURCES PRIOR TO TRANSMISSION; (V) USING THE SERVICES FOR ANY ACTIVITY THAT ADVERSELY AFFECTS THE ABILITY OF OTHER PEOPLE OR SYSTEMS TO USE EITHER THE SERVICES OR OTHER PARTIES' INTERNET-BASED RESOURCES INCLUDING, BUT NOT LIMITED TO EXCESSIVE CONSUMPTION OF NETWORK OR SYSTEM RESOURCES (WHETHER INTENTIONAL OR UNINTENTIONAL) AND "DENIAL OF SERVICE" (DOS) ATTACKS AGAINST ANOTHER NETWORK HOST OR INDIVIDUAL USER; OR (VI) INTERFERENCE WITH OR DISRUPTION OF OTHER NETWORK USERS, NETWORK SERVICES OR NETWORK EQUIPMENT. EXCEPT FOR CONTENT FORMATTED IN ACCORDANCE WITH AT&T'S CONTENT STANDARDS, UNLIMITED PLANS CANNOT BE USED FOR UPLOADING, DOWNLOADING OR STREAMING OF VIDEO CONTENT (E.G. MOVIES, TV), MUSIC OR GAMES. FURTHERMORE, UNLIMITED PLANS (EXCEPT FOR DATACONNECT AND BLACKBERRY TETHERED) CANNOT BE USED FOR ANY APPLICATIONS THAT TETHER THE DEVICE (THROUGH USE OF, INCLUDING WITHOUT LIMITATION, CONNECTION KITS, OTHER PHONE/PDA-TO-COMPUTER ACCESSORIES, BLUETOOTH® OR ANY OTHER WIRELESS TECHNOLOGY) TO LAPTOPS, PCS, OR OTHER EQUIPMENT FOR ANY PURPOSE.
What are AT&T's content standards? Am I to look this up before I agree? It's nowhere to be found on Google. Either way, Safari will play Quicktime movies from any website. So there you go.
If AT@T has to expand as a result of people using the phone to provide data to another device, you should help pay for that expansion, in proportion to your use, if you are going to use your phone to provide data to another device against the TOS.
They haven't expanded because of it. You act like tethering with a computer uses more bandwidth or is faster than if I use my phone... ITS THE SAME CONNECTION. SAME SPEED. SAME BANDWIDTH.