There are lot of important pieces of technology which are not prominent as they havent ridden the wave. The wave is an underswelling or hype factory that makes the piece of technology prominent, albeit it not being important. In the ages past we have had plenty of important technology that became prominent and a lot of unimportant technology that have become prominent. On the flip-side we have had important technologies that havent become prominent. Nuf, about all this gobblygook..
For me FP has been on the radar for the last couple of years. I started taking it seriously this past year by starting the SICP online course at OpenCourseware. In addition I am doing some exercises in Erlang to start looking at parallelizing transactions.
In the end, LISP lives on in the soul of the Internet as the search engines powered today by Google uses the functional map and reduce algorithms that had it roots in FP. May be the lessons learned from an important, yet not prominent technology still adds prominence by morphing itself to ride the wave!