Wonderful hack, really something I've been looking for.
I've got a few small problems though, because I'm trying to keep my forum a bit minimalistic (my taste

) I've been trying to put the list of users who thanked into a popup menu, similiar to the one you get if you click on a username.
To do this I've added a new button besides the "Reputation" one which needs to be clicked to see this menu.
The code I've used for this:
After "$post[iplogged]"
Code:
<span id="infomenu_$post[postid]"><a href=""><img class="inlineimg" src="$stylevar[imgdir_button]/info.gif" alt="Post Info" border="0" /><script type="text/javascript"> vbmenu_register("infomenu_$post[postid]", true); </script></span>
After "<!-- / post #$post[postid] -->"
Code:
<!-- Start Post Thank You Hack -->
$post_thanks
<!-- End Post Thank You Hack -->
And in the template post_thanks_box I replaced the non-script content with
Code:
<!-- post $post[postid] info menu -->
<div class="vbmenu_popup" id="infomenu_$post[postid]_menu" style="display:none">
<table cellpadding="4" cellspacing="1" border="0">
<tr>
<td class="userinfo" id="post_thanks_box_$post[postid]">
$post_thanks_box
</td>
</tr>
</table>
</div>
<!-- / post $post[postid] info menu -->
In addition I've also removed the $spacer's out of the 'post_thanks_postbit_legacy' template.
It's working fairly well, I've got a few problems that I couldn't find a solution for though:
How can I 'extend' the hack some so I'll able to hide the info.gif image if there are no users who thanked for a post.
And how can I make sure the list will be updated when a user clicks the "Thanks" button? I'm afraid I destroyed the AJAX somewhere but can't figure out where it was.
Thanks a lot for your help, hopefully there are also other users interested in this.