MMORPG.com blogger Mystik86 completes his list of 12 tips for players realistically looking to try their hand at roleplaying, dispelling numerous myths in the process
Tip #8
DO - Make small-talk about the various things you see in the world. This can sometimes lead to bigger things including large-scale player-driven events specifically for whatever is going on.
DON'T - Insist on commenting on every single thing happening. Most likely your character will be more concerned with a couple things going on and not the entire world. Unless your character is a god you probably won't know every little bit of information out there.