Note also that the term brutalism comes from the french term for "raw", as it referred to the method of building with raw concrete, "béton brut" espoused by Le Corbusier. It does not mean purposely ugly, this is a misinterpretation.
And if we're thinking in terms of straightforward, obvious functional design elements and no misdirection or ornament, sites like this one and Craigslist score high on the brut scale.