One more question...
PHP Code:
<if condition="$post to $vbulletin->userinfo['twitter_username']"><a href="tweet.php?do=post&id=$post[postid]&c=$post[postid]">Tweet this post!</a></if>
Are you saying it should look like that? Or should it look like this...
PHP Code:
<if condition="$post to $vbulletin->userinfo['twitter_username']"><a href="tweet.php?do=post&id=$vbulletin->userinfo[postid]&c=$vbulletin->userinfo[postid]">Tweet this post!</a></if>