Saif will be caught sooner or later if he isn't already caught. Theres nowhere for him to go. He was the one that came on Live TV when the revolution first erupted, the fucker was so arrogant when he came on TV pointing with his index finger and threatening to wipe out everyone.
Also look at his arrogance here
http://www.youtube.com/watch?v=mPbd-7mwfYU
As for Gedaffi's wife and daughter, they are both in Algeria. They didn't believe the news that Gedaffi was killed, so they called him on his personal phone, which was in the hands of the rebels at the time. His wife started crying when the rebels answered her, and she got confirmation the news was real, while Aisha took the phone and started throwing insults at the rebels calling them traitors and rats.
To be honest i don't care one bit about either of them, they can rot in Algeria till they die for all i care. I don't think we should waste our time pursuing them.