The plugin is great BUT, the new version 1.4 crashes the site in Internet Explorer 8. The site doesn't crash in IE 9 and Firefox or Chrome.
Disabled all plugins except for WordPress Related Posts. The problem is SOLO, it's not a conflict with another plugin (I think).
Also, make the thumbnails size customizable. Let users change the size of the thumbnail which is coming from custom fields.
For example, I would like to use 5 100x100 thumbnails all showing up next to each other with tiny spaces between them (like a gallery) ;)
Wouldn't that be awesome?