You may hide your widgets using this CSS code:
Note: Remove the “//” before the attribute “display: none”.

.friendster-video{
// display: none
}

.friendster-about_me{
// display: none
}

.friendster-wall_media{
// display: none
}

.friendster-friends{
// display: none
}

.friendster-reviews{
// display: none
}

.friendster-groups{
// display: none
}