  In this paper, we study almost minimizers to a fractional
Alt-Caffarelli-Friedman type functional. Our main results concern the optimal
$C^{0,s}$ regularity of almost minimizers as well as the structure of the free
boundary. We first prove that the two free boundaries
$F^+(u)=\partial\{u(\cdot,0)>0\}$ and $F^-(u)=\partial\{u(\cdot,0)<0\}$ cannot
touch, that is, $F^+(u)\cap F^-(u)=\emptyset$. Lastly, we prove a flatness
implies $C^{1,\gamma}$ result for the free boundary.
