Externally powering LEDs so Arduino doesn't fry

Hippynerd:
In your car analogy, do you drive half the speed limit, because its safer? it is safer isnt it, so why dont you drive half the speed limit. Are you unconcerned with safety? Are you a reckless person driving the maximum speed limit, or are you interested in safety, and drive half of the recommended maximum speed limit?

I always felt the safest speed to drive at is the same speed everybody else is doing. Driving half speed causes unexpected circumstances for other people.

OTOH you just broke the original analogy by taking it too far.

PS: You still didn't answer about the 'cloud' guy, he resembles you in many ways. Yes he's lighting up some LEDs, but his 'designs' are going to break people's parts. What's your opinion on that?