Then why not just say you list things chronologically? Why confuse your potential customers by making them work backward from Facebook's Timeline feature to simply listing things chronologically? If you have to attach to Facebook's success in order to sell your product, you probably have a long way to go. Try defining it in your own words.
Interesting you say this, as most people will tell you to define it in terms of products people already know and use. Most people would get "a Facebook timeline but private"
