The Giants have signed 26-year old John Busing.  Busing played in 16 games for the Texans last season and he had 32 tackles, 3 passes defensed and 1 interception.  He has now played in 43 games in parts of 4 years in the NFL and he has 57 tackles, 3 passes defensed and 1 interception.  Busing will help out on special teams and provide depth to the defensive backfield so this signing will likely help the Giants in 2010.