Well DarkMaster, we'll just agree to disagree.

I'll get used to your style of DMing and you'll get used to mine. That's what makes roleplaying interesting... working with other folks and their own particular picadilos.
The biggest thing I'm trying to avoid is the exceedingly long waits between posts for those people who want to post more than once a day. If you have a player that can (and wants) to post at least once a day, but others who might take more than a day or so to post (or doesn't make posts that push the story forward), then we end up with players who are sitting on their hands because they don't feel right posting twice in a row (since no one else has responded yet). I know I get incredibly impatient when I'm playing when I see that my post from the previous day in the morning hasn't been responded to and it's now the afternoon of the next day. Thus by bringing in more players, the odds of more posts occuring at a quicker rate means those that want to post quickly can, and those who are comfortable taking their time between posts can as well. That's all I'm hoping will happen.
And dont worry about me having the story drag because I have to "wait" for people to post. The one thing I don't do is wait. If one person says they are doing "x", I'll usually wait a bit to see if someone says they'll help... otherwise I'll just plow ahead and describe what happens after "x". If other people haven't responded yet before I do so, then their characters are just watching as "x" occurs.
The story will progress as fast as your characters DO things. If you only talk about doing things or ask each other's opinion first... then yeah I'll usually wait to see if anyone makes a decision before pressing forward (and thus the story will drag as we wait for each person to give their suggestions).
So this goes out to anyone in the group... if you want to do anything specific... just say you are doing it. If you are able to connect what you are doing to a Skill Check (and give me the numbers), you have a better shot of it working. Action begets more action... so to keep the game from dragging, have your characters be pro-active and not re-active. Because the last thing any of us what I think is the following post exchange over the course of an entire week:
DM: "You're all in front of a door."
1: "We should open it. What do you think?"
3: "Yeah, let's open it."
2: "Do you think we should check for traps first?"
4: "That would be a good idea."
3: "I agree."
1: "Yes, #2... check for traps."
2: "Okay, I check for traps."
DM: "You find no traps."
3: "I think we're okay to go through."
4: "Okay, let's go through."
1: "Right. What do you think?"
2: "I think it's safe to go through."
4: "Let's do it."
3: "I'll keep my bow trained on the door when you go through."
1: "Who's going through the door first?"
2: "I can."
4: "No, let me... I can take the hit better if there's anyone behind it."
3: "Should we listen at the door before going through? That might be smart."
1: "I'll listen."
2: "I'll listen too."
4: "Me too."
DM: "You do not hear anything."
3: "Okay, so I'm readying an action to shoot my bow if anything's behind it."
1: "I have my sword out."
2: "I can be ready to attack as well if you'd like."
4: "That would be good."
3: "Yes, that would be a good idea."
2: "Okay, then I'll take my sword out as well."
4: "Are we ready?"
1: "Yes."
3: "Yes."
2: "Go for it."
4: "Okay, I open the door to the room."
Moral of the story: the more information you put into a single post about what you want to do... the more things the rest of the party can react to immediately, and the quicker the resolution of the action will come.
