mrfraz on "order get_the_tags()"

Hey,

it's possible to order the tags with this code?
i have two tags, but i want to show only one.

maybe the one with the most posts, or only "this tags"... or something like this? but not sort.. alphabetical

<?php

$posttags = get_the_tags();
$count=0;
if ($posttags) {
  foreach($posttags as $tag) {
    $count++;
    if (1 == $count) {
      echo $tag->name . '';
    }
  }
}
?>

thank you very much!