In addition to radio jets, cosmic rays, intergalactic hydrogen, and whatever new natural phenomena are out there, LOFAR has signed on to help with the Search for Extraterrestrial Intelligence, or SETI. After all, we don't know what frequencies our Galactic neighbors might be using for communication, so we may as well check as many as we can!
The first step is a feasibility test. That is, can researchers remove all the man-made radio interference well enough for SETI? I can tell you from experience, there is a LOT of interference at these frequencies (I'm looking at you, digital TV.)
Although it has been 50 years since the first SETI project by Frank Drake in Green Bank, West Virginia, we have yet to find a signal. We have, however, only been exploring a small part of our galaxy and in limited frequency ranges. Any expansion of our capabilities is helpful to the search, as long as they don't find anything before I teach my "Life Beyond Earth" class this summer. I'd hate to have to rewrite the syllabus on short notice!