Geocoded Twitter Search
<?php
$ggc  
'http://maps.googleapis.com/maps/api/geocode/json';
$loc  urlencode('Tapachula, México');
$json file_get_contents("$ggc?address=$loc&sensor=false");
$data json_decode($json);
$lat  $data->results[0]->geometry->location->lat;
$lng  $data->results[0]->geometry->location->lng;

$tws  'http://search.twitter.com/search.json';
$json file_get_contents("$tws?geocode=$lat%2C$lng%2C25km&rpp=50");
$data json_decode($json);

$twpr 'http://api.twitter.com/1/users/profile_image';

foreach(
$data->results as $tweet):
echo <<<EOT
<img src="$twpr/{$tweet->from_user}?size=normal" style="float:left;"/>
&nbsp;<b>
{$tweet->from_user}</b><br />
&nbsp;
{$tweet->text}<br clear="left"/>
<br />
EOT;
endforeach;
?>
Output