FastCompany: “It’s no secret that your personal data is routinely bought and sold by dozens, possibly hundreds, of companies. What’s less known is who those companies are, and what exactly they do. Thanks to a new Vermont law requiring companies that buy and sell third-party personal data to register with the Secretary of State, we’ve been able to assemble a list of 121 data brokers operating in the U.S. It’s a rare, rough glimpse into a bustling economy that operates largely in the shadows, and often with few rules. Even Vermont’s first-of-its-kind law, which went into effect last month, doesn’t require data brokers to disclose who’s in their databases, what data they collect, or who buys it. Nor does it require brokers to give consumers access to their own data or opt out of data collection. Brokers are, however required to provide some information about their opt-out systems under the law–assuming they provide one. If you do want to keep your data out of the hands of these companies, you’ll often have to contact them one by one through whatever opt-out systems they provide…Those include big names in people search, like Spokeo, ZoomInfo, White Pages, PeopleSmart, Intelius, and PeopleFinders; credit reporting, like Equifax, Experian, and TransUnion; and advertising and marketing, like Acxiom, Oracle, LexisNexis, Innovis, and KBM…”