The Internet Archive snapshots suggest that the site, zengoban.com, disappeared in 2011, less than a year after the creation of the article. It seems reasonable to presume that the company died with it.
Zen Goban was a direct importer of Go Boards, Go Stones, and Go Bowls. It is based in Winter Garden, Florida (USA).
Their website claimed to offer "simply perfect Go supplies" and that "the main focus of our business is to bring a quality product, at competitive prices, to our customers."
In July 2010, they only had a small assortment of (apparently) quality boards, stones and bowls all imported from China.
Their main market was North America but they would also export to the rest of the world.
Opening announcement on Life in 19 x 19: http://www.lifein19x19.com/forum/viewtopic.php?f=39&t=1011