I've been using MLF for two forums since 2004 but after 16 years and over 30,000 posts it was time to move on. This weekend I merged the two into a single Simple Machines installation.
Thanks to the all the developers for making MLF. Although I have chosen to abandon MLF it has served me well for most of the time. But in the later years it has become more and more evident that MLF hasn't managed to keep up with what users expect from a modern forum. The lack of a responsive design is of course one the reasons.
Anyway, keep up the good work!