Hi Jackhill, in fact we've had several million essays submitted to us and now have over 300,000 of them available publicly on the website.
As has been discussed previously on this forum we also own the plagiarism detection service Viper, where students agree to allow us to publish their essay as content in exchange for the plagiarism detection service. As you can imagine this is extremely popular service and a fair exchange for the student with alternative services such as Write Check (TurnItIn) costing $7.95 per paper.
If you want to read more about our license to use essays you can see it over on the Viper site, Scan My Essay here: scanmyessay.com/viper-use-essay.php
All of the documents sent to us and the work we produce is protected by our confidentiality guarantees to our customers, as well as UK data protection law. As a registered data controller (Registered Data Controller No: Z1821391) we take every measure possible to protect our clients personal information.