This time it's neutrinos from alien physics experiments. I have my doubts about this one. It has to be strong enough to be possible to see at astronomical distances, and we have to be able to distinguish it as a point like source that goes off and on -- it's difficult enough to distinguish any extrasolar neutrino sources as it is, and if it's not on all the time it might just be missed. But who knows what we'll discover with IceCube? It's certainly an entertaining thought.
On a listserv I subscribe to, someone associated this news story to the Stanislaw Lem novel His Master's Voice. I haven't read that one (yet).