Christians: Is it appropriate to say "**** you" to someone who uses the Lord's name in vain?

Hello and happy Easter (well, which is tomorrow, but happy early Easter)! One of the things that pushes my buttons is when someone (on or offline, but especially online) uses Jesus as a swear word. The ONLY time I ever do that is when there's a situation so intense that I'd like Jesus/God to intervene; for example, "Jesus Christ, how can people in this city be so stupid?" That means I want Jesus/God to try and change those idiots. Now, if you look at the Ten Commandments, one of them says, ""You must not misuse the name of the LORD your God. The LORD will not let you go unpunished if you misuse his name." (NLT) Look at the second half - I figure, why not help God with his "homework" by punishing them? So, especially online (hardly ever offline because there are a lot of crazy people out there who would want to beat me up if I tried to "punish" them), I simply say, "**** you for using the Lord's name in vain!" For example, this is from a forum about the movie Titanic (hey, 100th anniversary coming up!) - SPOILERS:

OP: BOTH Jack and Rose could have lived if (blah, blah, blah)...

Responder: Christ, this again?

Me: Fuh-q for using the Lord's name in vain. Fuh-q!

Responder: And I'm sure the Lord is very proud of you for saying "Fuh-q." Imbecile!

ROFLMAO!!! I just think people like that deserve to be punished according to the Biblical scripture, that's all. But still, is my swearing any "better" than their swearing? It seems like I'm sinking down to THEIR level by getting pissed at them and swearing back. Christians, what is the morality behind my logic here? Appropriate or inappropriate? How would YOU react?