Originally Posted by Say Chi Sin Lo
I already mentioned I'd hardly ever do it, and if there was another shot for me to hit, I would.
One circumstance where I'll NEVER beam it at the net person is, returning a floating serve. Call it being naive, soft, or whatever (I've been criticized as so by my doubles expert friends), but I'm not about to punish the net person for something s/he had no control over. (Except pick a better partner, haha)
If you are not going to "punish" someone's doubles partner for the mistakes, including but not limited to floating serves, made by their partner then you are giving away too many free points and ultimately punishing your own partner. IMO anyway.