I guess the real question then is do these two count as the same thing? the three wire motor is essentially a continuous rotation "servo" called a motor in this instance by vex.. it all depends on definition now.
3 Wire Motor
http://www.vexrobotics.com/products/.../276-2163.html
3 Wire Servo
http://www.vexrobotics.com/products/.../276-2162.html
Here is one that is labeled "correctly" depending on your viewpoint...
Continuous rotation servo
http://www3.towerhobbies.com/cgi-bin...&I=LXSYK3&P=FR
I also posted a similar question on the usfirst forum, we will see what they have to say also..
http://forums.usfirst.org/showthread.php?t=16325
Our team would like to use a few "continuous rotation servos" to spin some wheels in our claw mechanism this year.. Trying to figure out if this is legal..