Gliese 581 – Another Earth?

Twenty light years from our planet, the Earthlike planet – Gliese 581, are orbiting around its own Sun. The orbiting distance brings the ideal conditions for life existance on this planet. Gliese 581 has a mass about three to four times Earth and seems to be a rocky planet where the life beings similar to us could live their lives, parallel with ours. Even if it is true, we are still far away from communicating with them.