Vaul:
You've pointed out something that sadly is not obvious to all of us. Some roleplay is clearly over the line, some is worthy, and yes at times (lately especially) some questions do seem to go unanswered. I agree with you, saying so does not make you shoot lightning from your eyes. I personally think that stinks. If you have a spell use it, if you don't..then you don't dude.
It is not 100% necessary to role play in chat. If you wish your character to be well known or "popular" it's a game you will have to play a bit.
I have recieved many PMs that I found intriguing. In fact, Liberty and I have done a bit of roleplay just in that sense before ever having met in person. Many people use their papers as a way to introduce the more interesting aspects of their charactar, sadly, not all persons read those papers. Another fun option is the forum. A lot of players have used the Local Lengends area to enhance their stories, or even describe the roleplayed events in game. I recommend Wyken Vanarils interactive thread. It's a wonderful idea, and I hope more people play that way.
I find roleplay in chat the most fun and "real"...simply because it is immeadiate response and reaction. I am not sure the Sanctuary is always the best place. A lot of good stuff gets lost when the chat moves too fast. It's often more fun to plot and plan in less busy spots, or happen across interesting bits on the way to elsewhere and react.
To those who are really seeking ingame questions and answers, I have to say I have had the same issue the few times I've used the LHO button. I recommend sending mail directly to a player who seems knowledgable. Most are happy to answer. I try to answer questions in chat when I see them, but as I've mentioned the business of some places makes those questions easily lost.
Another suggestion is to try the dojo. It is specifically designed to help new players learn the battle system, and acclimatize themselves to the game. The dojo is in Marble Dale Park (just inside the city gates, statue of a pretty lady), and there is always someone there keeping an eye out. Most players there will answer any questions that you might have.
The best way to answer a question is to find a knowledgable player. There are so many people here willing and happy to take you under their wing. A personal relationship of some sort will help you a lot more than a random question in chat. Hope this helped!