Several talks related to StochSS were presented at the SIAM conference on Computational Science and Engineering 2013. Some of them have been made available as slides and audio by SIAM:
Linda Petzold: A First Passage Time Algorithm for Reaction-Diffusion Processes on a 2D Lattice.
Andreas Hellander: Efficient Simulation of Mesoscopic Reaction-diffusion Kinetics via Operator Splitting.