I looked into my magic puddle (wish I had a crystal ball but I don't) and saw the first segment of the population to utilize personal genetic information.... in mass... will be the young and it won't be for medical information.
Keep your eye's open for applications that utilized a person's DNA SNP values for their IMVU avatar or online gaming character. Next, don't be surprised when teenagers quickly become the best genetic researchers in society (since the young are keenly aware of any flaws in the previous generation and may be more than happy to report them via some future Facebook app). Word of advice... be extremely kind in your interactions with any young techie at family gatherings this holiday season.
Good luck to us all,