Great review. I agree on the fact that many of us have lost control over their data including me. I have been more careful with my personal data recently, since I value them a lot, but entering surveys and lotteries already have caused damage to my data. Quite often I get phone calls or text messages with advertisement, which 5 years ago wasn't even a marketing method. Nowadays data is worth pure money and PDATA seems to be able to get at least some control back to you. I like the project!