libfetion: I can’t login with mobile phone number now, but can login with fetion id.

openfetion: new project http://sourceforge.net/projects/ofetion/

when I do apt-get update. got some error

“GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY FA9C98D5DDA4DB69”

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <strong>FA9C98D5DDA4DB69</strong>