Good lord, this forum needs a new image BBCode tag which can create linkable thumbnails.
Someone should mail Yac a new BBCode suggestion, something like this :
BBCode Usage : [imgs={NUMBER}]{URL}[/imgs]
HTML Replacement : <a href="{URL}"><img src="{URL}" width="{NUMBER}" /></a>
Help line : Image with defined width (px). Usage : [imgs=width in px]Image URL[/imgs]