I'm in two minds, I can see benefits for some but I think that the information in the wrong hands could be very damaging. By that I mean getting a result from a screen rather than a doctor who can put it in perspective.
Yes, it's not advisable to give the general public this kind of info, it will be misunderstood and cause l sorts of grief. The public are poor at processing this kind of information, look at the MMR fiasco!
Yes, apart from it's accuracy I have no idea why someone would allow their DNA samples to be stored on a supposedly private database.
I get enough rubbish coming through to my address or phone from supposedly private databases. You'll be getting dodgy medical practices contacting people and the gullible will be in a panic.
The thing is that these are tests offered by 'commercial organisations'....there are no safeguards as to whom, or where, the information can be sold on to.