SETI@home project identifies candidate radio signals:

“After more than a million years of computation by more than 4 million computers worldwide, the SETI@home screensaver that crunches data in search of intelligent signals from space has produced a list of candidate radio sources that deserve a second look.

Three members of the SETI@home team will head to Puerto Rico this month to point the Arecibo radio telescope at up to 150 spots identified as the source of possible signals from intelligent civilizations.” spaceref.com