Slate has a two-part series on the economics of Justin, Kayley, Matthew and LaTishia.
Once a name catches on among high-income, highly educated parents, it starts working its way down the socioeconomic ladder. Amber, Heather, and Stephanie started out as high-end names. For every high-end baby given those names, however, another five lower-income girls received those names within 10 years.
I take this to mean we'll see an explosion of little Claras by 2010.