It never ceases to amaze me at how many people enter role playing communities and games without the slightest idea of how to actually role play. Being a newb is all well and good and I would never begrudge a new comer. But if you do not know the basic rules and conduct of role playing, then put those little fingers to work and do some research online or even ask someone for help. Some of the ancients ones are more than happy to give assistance to someone new to role playing, personally.
As a quick run down, and minus any confusing terminology for those not familiar with the world of RP'ing, there are some things that you simply can not do in a role playing situation: You can not write the actions or response of others. That should be a no-brainer. You can not control the actions of another person IRL so why on earth do you think you could do so in a role playing situation? You control you, your actions, and your responses to others ONLY. It not only does not make any sense, but is crossing a line into someone else's territory. There are very few exceptions and few actions that would even require a built in response to the post to begin with.
So you can not do something as stupid and walk into a room and kill everyone in sight. You are NOT God and thusly can not play as such. Any really why would you want to? That would kind of make for a very boring place if everyone was dead, would it not?