User blog comment:TheTobarMethod/Guide To ADC/@comment-3541335-20130223193417

"During teamfights you should be focusing on killing the enemy ADC and or APC so your bruisers can then disperse of other targets. Also, killing the enemies damage dealers, allows you to stay alive and not worry about getting burst down."

I suggest tweaking this a little bit so it doesn't seem like you're saying to be smack dab in the middle of a team fight to target them. Sure, you'll be in range for them, but you're in range of the entire enemy team too. As Alex Ich said, "Kill the closest."