A lot of German-language web sites have a section called "Wir über uns." Here's an example: Credit Suisse - Wir über uns
To me this seems redundant; I would think "Über uns" is sufficient. That would clearly mean "About us", whereas "Wir über uns" seems like it would mean "We about us", which in English, at least, sounds terrible.
But the expression including "Wir" seems quite common. From a grammatical point of view, how does it work?