I probably asked the question poorly, so let me take another approach...let's say I've been tasked with managing a replication environment and I notice that things are starting to get slower and slower. I've read your article and start to wonder if I should add a second disribution database, but doing so requires setting up a maintenance window and a signficant amount of work on my part. What kinds of things should I look at to get a better feel for if adding a second distribution database is really the right course of action?