The sharing economy primarily revolves around a handful of mammoth businesses that let us hire or offer everything from a car's back seat to a bedroom.

In exchange they generally make us cough up a lot of personal information. They also keep records of whose back seat we sit in and where we drive, whose clothes we're wearing, whose bed we're sleeping in and who's sleeping in ours.

That's great added value for exhibitionists, but the rest of us have largely been left to wonder who is privy to all that sensitive personal information.

Since 2011, the Electronic Frontier Foundation (EFF) has released its annual Who Has Your Back report on which companies do, and don't, protect your personal data from prying eyes.

This year, the privacy and digital rights group is looking at the sharing and gig economy, and asking how much of your personal data companies like Airbnb and Uber share with snooping government agencies.

Previous editions of EFF's Who Has Your Back report have looked at social networking sites like Facebook, email providers like Gmail and internet service providers like AT&T.

EFF's reports have led dozens of companies to start releasing transparency reports that explain how they respond to government requests for data.

In 2014, many companies such as Apple, Facebook, Microsoft, Yahoo and Google started letting users know when a government agency requests their data, according to the Washington Post. The legal spate between Apple and the FBI threw the debate into the public eye.

The latest edition of Who Has Your Back looked at 10 companies in the "sharing" or "gig" economy. Both terms refer to the age-old practice of privately letting out property and services for a fee, but with the difference that these services are exchanged on primarily web-based companies which take a cut of each transaction.

The report covers big names like Uber, Lyft and Airbnb, as well as smaller names like Instacart, which delivers groceries to your doorstep, and Flipkey, a vacation rental service like Airbnb. More than 1% of Americans earned some income from these services in 2015, according to a study by JPMorgan, and millions more use their services.

The report ranks companies in the sharing or gig economy according to 6 factors, such as whether they require a warrant before releasing users' data or location, whether they issue a public transparency report and guidelines for law enforcement, whether they stand up for privacy in Congress and, most importantly, whether they tell users when government agencies request their data.

Out of the 10 companies surveyed, only 2 received the highest score of 6 out of 6, according to the EFF: the ride-sharing companies Uber and Lyft.

Both companies require warrants before complying with government requests for users' data and location, both issue public transparency reports and law enforcement guidelines, and both inform customers about data requests by government agencies and stand up for user privacy in Congress.

On the flip side, 5 out of the 10 companies the EFF look at scored 0 out of 6: the on-demand labor marketplace TaskRabbit, the delivery service Postmates, the peer-to-peer car rental services Getaround and Turo, and the vacation rental service VRBO. None of these companies require that government agencies get a warrant in order to access user information, and none of these companies inform users when they hand over their personal data.

Government requests for personal information are on the rise, and although more companies are releasing transparency reports, not all companies let users know when the government asks for their data.

Google, Facebook, AT&T and many other companies release transparency reports telling users how many government requests for personal data they receive, how many times they actually hand over information, and most notably, they tell users when the government asks for their information.

You can find a list of companies that release transparency reports on Google's Transparency Report page.

And it's not just ISPs, social media sites and email providers that receive government requests for data.

Last year, UC Berkeley announced that it would start releasing a transparency report, one of the first schools to do so. Berkeley's transparency report offers a glimpse into the number of data-access requests which universities and colleges receive.

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