Code Golf!

gistfile1.php

<?php

//get the review type based on page custom meta field
function oswc_get_review_meta($postid) {
	//try every reasonble conceivable variation that the user my enter to make this as user friendly as possible
	$possible = array(
		'Review Type',
		'review type',
		'reviewtype',
		'Reviewtype',
		'ReviewType',
		'Review type',
		'review Type',
		'Post Type',
		'post type',
		'review_type',
		'Review_Type',
		'Review_type',
		'review-type',
		'Review-Type',
		'Review-type',
		'post_type',
		'Post_Type',
		'Post_type',
		'post-type',
		'Post-Type',
		'Post-type',
		'Reviews Type',
		'reviews type',
		'Reviews type',
	);

	foreach ($possible as $key) {
		$value = get_post_meta($postid, $key, $single = true);
		if (!empty($value))
			break;
	}
	return $value;
}

The sad part is, this isn't even a solution.