$this->elementStart('collection',
array('href' => common_local_url('ApiTimelineUser',
array('id' => $this->user->id,
'format' => 'atom'))));
$this->element('atom:title',
null,
$this->elementStart('collection',
array('href' => common_local_url('ApiTimelineUser',
array('id' => $this->user->id,
'format' => 'atom'))));
$this->element('atom:title',
null,