I just came across a situation the other day with regards to searching forum profiles. You can search for member names (providing either a full or partial name), but you can't search profiles for content.
It would be nice if in addition to the member search, forum search, site search, if there was a profile search option that would be based on content and not member name.
Currently, for example, if someone mentions a specific term in their profile and I can't remember who that was, I can't find it.
I also can't search for home page URL's to figure out if a particular site belongs to a forum member. I recently ended up on a site that looked so darn familiar and I don't know why. It's not the kind of site I would end up on by accident or follow a link from somewhere else on another site. I believe it may belong to a member of this forum, but I really can't be sure...and not knowing is driving me nuts.