It's little things like this that Theymos really ought to update, because I see why OP is perhaps confused about the feature. This is what it looks like when you click on "Members":

But what the link should really be is "Member Search". Or at least that "view all members" link should be deleted and there should just be a field to search for specific members in. Stuff like this shows just how ancient-ish bitcointalk is and how badly in need of some touch ups it is.
By the way OP, I search for members quite often using that functionality. If you ever reference a member in a section like Reputation or Scam Accusations, for instance, it's a good idea to find the member's profile link and use it to create a hyperlink in your post, e.g.,
Foxpup is a vivacious, vile, voluptuous vixen. Just an example there; no one touches me where I pee whilst wearing a mask and brandishing handcuffs unless it is that specific member.