This is not helpful (as in, its more spam 
), because you can find images and videos everywhere in the net, or near any glass object around you. Instead of posting videos, you could try to recreate such effects in materials and shaders.
THAT would be helpful, because then everyone, including the devs could use it, or refine it.
Also we can use the path tracer to see what caustics should look like in our scenes if we want to fake it.