Will 23andMe and Navigenics lock up your genome and charge you for the key?

Over the last few months, startups like 23andMe and Navigenics have attracted a fair bit of attention for promising to let ordinary people search through their own genomes to better understand their disease risk, genealogy and ancestry. (For our coverage, see the links at the end of this item.) But one of the first major attempts to take a close look at them — courtesy of the November issue of Portfolio — left me with the distinct impression that these companies may not actually be anywhere near as revolutionary as they seem.