COMBAT RULES
Generally, I like to be fast and loose with combat, keeping battlemat tactics out of it. You'll have to place your trust in me to determine things like cover, concealment, line of sight, distances, areas of effect, AoOs, etc. I can assure you, though, that I will never -- under any circumstance -- deliberately screw you over. If, for instance, you want to drop a fireball into a group of baddies and one of your pals happens to be within the radius, I'll let you know before you do it. Blatant stupidity, of course, will yield nasty consequences.
I also prefer not to use individual initiative. I will roll once for the group, using the highest initiative modifier among you. Then I roll once for the baddies, doing the same thing. When it is the PCs' turn, it becomes first come, first served. Just go ahead and tell me what you're going to do. I will respond to each PC's action with a separate post, or group some results together, depending on how many of you post your actions before I read them. I will wait a while for everyone to declare actions, but not too long. I'll move onward, assuming your PC is using Total Defense.
I've used this method in another Eberron game I've run on a different site, and it tends to keep things exciting. Use Invisible Castle for all rolls, and don't forget your store of Action Points!