I would love to see TER create a calendar that shows, for each city, which providers are available which dates.  This could be created automatically, I think, by using the ad boards for that particular city. So, for example, if a provider posted an ad today (2/4) saying she was going to be in my city Feb 15-20 her name would show up on the calendar for those days.  We could then pull up the calendar, find the day we are interested in, and see  a list of links to the ads of providers that are available that day.