transmission in neutral

Is it a good idea to put your trans in neutral when you come to a stop sign or red light?

I was told that it is easier on the transmission instead of leaving it in drive.

 

Yup , as Memario has listed .....stay in drive with your foot on the brake . You have the torque converter to thank for this . Its the fluid coupling between the engine and transmission . When you drop into neutral , you put excessive loading on the transmission as well as the differential and driveshaft when you put the transmission back into drive from a stopped position .
Forward to reverse is also a big issue it seems . If you come to a complete stop before changing from forward to reverse you will keep your truck rolling for a much longer time . Skipping out on this step causes some nasty damage

 

Considering you have 3 vehicles listed in your signature I'm assuming this isn't your first vehicle...