Currently Adobe sets a limit to the number of unique pages a customer can accumulate during a month. That's somewhat understandable, but there is currently no tool or option to determine how many unique page names you have accumulated at a given point within a month.
Once the limit is reached, it is not possible to see any new pages in Site Catalyst. This can have a serious impact on reporting. So due to this, it is important that a tool be made available that let's customers determine the number of unique page names they have so that they can make adjustments to how their page names are constructed if necessary.