We should not get our hope too high. It is 6.3 billion light years away, the signal generated even before our solar system existed. See also "Possible Signs of Extraterrestrial Intelligence?" [1] from February discussing the then hot Tabetha's Star / alien megastructure.
Looks like it could be similar to the Wow signal, a brief strong transient that was never re-observed. Hopefully this time, the Allen Telescope Array can keep an eye on it long term.
An issue in SETI is the duty cycle problem. If a transmitter is cycling between targets (an isotropic beacon would require insane amounts of power), the receiver needs to be looking at the transmitter at the right time.
[1] http://www.skyandtelescope.com/astronomy-blogs/cosmic-relief...