Dan Werthimer talked a bit about SETI@Home and BOINC.
This is a very well-known project run from my alma-mater.
He talked about several ways over time that people have tried (or suggested trying) to tell extra-terrestrial life that we are here. None of these were funded. He makes the point that there was no funding until Voyager, which he called "Porno in space". If you don't get this, look for the plaque on the side of Voyager (or recall V'ger).
His whole talk was pretty amusing. A mix of SETI science and humor.