OK, so with the help of an internet service run by NASA, we can get some advance warning for the next galactic core-collapse supernova, when a star in our own galaxy goes kaboom  and forms a black hole or a neutron star.

So what? Why would we want to have advance warning for this?

Will it kill us all and we will want to give our loved ones a last hug?

No it won't. Well, theoretically it could if it was very very very close indeed, but none of the stars that are sufficiently close are expected to go kaboom anytime soon, so you are pretty safe for now.

Won't a galactic core-collapse supernova be so obvious an bright that we will know instantly where to look? Why do we need advance warning?  

A typical core-collapse supernova can outshine its host galaxy and is an intrinsically very bright event indeed. The problem here is that we are sitting in the middle of the galactic disk and the next galactic cc-SN will likely also be in the galactic disk (but at some distance), so we will very likely have no unobstructed  line-of-sight to the event. We will likely have to watch it through some  spiral arms, dust clouds etc in between, which will dim the light of the supernova very efficiently at least in the visual part of the spectrum, where our eyes and most of our cameras are sensitive. If we want to follow the next galactic cc-SN right from the beginning, we will likely need to do some searching to actually spot it as fast as possible. It might not be a bare-eyes event. This is consistent with the fact that humanity missed a few cc-SN in our galaxy in the last couple of hundred years where we only later found the supernova remnants.

So in the event of a neutrino trigger announcing a galactic core-collapse SN, it will be an all-hands-on-deck situation where we will want every telescope available getting ready to hunt for the optical counterpart. Professionals and amateurs can  contribute to this quest. 

And that is where tools like the one developed in this project can be useful. We want something that will wake you up at night when an alarm is raised.