Fascinating article by Charles Q. Choi and presented at MSNBC.com regarding a new manner in which to search for signs of intelligent life, via faint laser pulses in contrast to the larger, isolated bursts they were looking for before:
Perhaps the most fascinating quote of the article is this one:
“We assumed that aliens would use the simplest possible way of attracting our attention, one already implemented in seafaring since ancient times using lighthouses — that is, periodic light pulses,” (laser scientist Walter) Leeb said.
The key is repetition in the signals, faint as they may be, which would indicate something not necessarily found in nature.
As I said, fascinating stuff!
Now, on to the other side of the coin: Top Ten Alien Encounters…Debunked:
http://www.space.com/9704-ten-alien-encounters-debunked.html