In addition to the already posted advice, you should be aware that all the messages in the undead asylum have been put there by the developers. It's only once you get to Firelink shrine you will see messages from other players. If you see "Try jumping off", 9 times out of 10 it's a troll, but then that one other time you might get something great. So then you have to ask yourself one question - Do I feel lucky? Well, do ya, punk?!
About the messages though – if they are written by other players how come they are all so sensible? Nothing trollish like ‘u suck’ etc….
Also how do you rate the messages? Or write one? And why do they all of a sudden appear? I really don’t get it at all.
Sorry for the noobish questions…..