There may be others, but I found this.
Hide Various BB Code Content From Users
by: calorie
This mod makes it so you can hide various BB code content from certain usergroups. It takes into account both primary and secondary usergroups and is controlled completely through the
vB ACP.
The various BBcode content you can hide is as follows:
[b], [i], [u], [COLOR], [SIZE], [FONT], [left], [center], [right],[indent],[list], [url], [email], [thread], [post], [code], [php], [html], [IMG], [quote]
http://www.vbulletin.org/forum/showt...light=hide+img