No genetic privacy? No problem.

Medical investor Esther Dyson explains why she feels comfortable exposing her genetic and medical information on the Internet. She acknowledges that she doesn't have deep secrets or vulnerabilities that might expose her or her relatives to stigma or loss of insurability, and wonders what transparency may mean to others who are "less fortunate."

No matter, she says; the broader spread of medical and personal information on the Internet and elsewhere is "inevitable." See her Wall Street Journal column here.