If you have a site written in Cold Fusion (.cfm) I feel sorry for you.

All kidding aside, it can be a great language, and produce a very good site, but it is a bear to optimize.

As with any programming language, there are obstacles put in the way of optimization. Often times you'll spend hours of time simply looking for the file that contains the information you want to update. All in all if you wrote the site yourself you won't have these problems. But if someone else wrote the site, set it up their way, you will more than likely be confronted with a very confusing site to work on.

As mentioned, generally languages like this are used when there is a database of items to draw from. As when you have a catalog and need to update it regularly. These languages help in that respect, but are nearly always more difficult to optimize.

Also as mentioned, session IDs and other dynamic nature URLs creeep into the mix and present problems.

As I always say. If you are starting from scratch do your site as .php pages in straight HTML.