The "Geometry Pro" family has been designed to be the final word in purely geometric fonts, and this rounded "Soft" sub-family is the ultimate web 2.0 style font collection.
Even though it is strictly geometric (as drawn with a compass and a ruler fixed to 90 and 45 degree angles) it is not slavishly modular: letters have differing widths, and the sidebearings, spacing and kerning has been finely adjusted to create smooth text.
The Soft family contains three weights each with 6 variants - X is the serious text version.