Someone

				while ($row = mysql_fetch_array($result))
				{
						$tags = explode(', ', $row['tags']); 
						foreach($tags as $b)
						{
							if(count($tags) >= 3 )
							{
								echo '<a href="tag.php?tag=', $b, '" style="font-size:25px">', $b, '</a> ';
							}
							else
							{
								echo "<a href = 'tag.php?tag=$b'>$b</a> ";
							}
						}
				}