In 2015, LinkedIn used forced action as part of their website registration process. In one of the steps, users were shown a harmless looking page titled "Get stated by adding your email address". Below this was a text field for their email address, and a prominent "Continue" button. This appeared to be mandatory, and users most likely felt it was harmless as almost all websites require an email address during registration. However, the true function of this was to access the user's email inbox and extract all of the email addresses it could find. Although the page did provide a description of this function, the text was grey on a blue background, making it relatively low contrast and hard to notice, and the textual content did not clearly state the consequences. Although the user could reject the request to continue, this was also unclear. The "skip this step" link was relatively small and hard to notice, positioned at the bottom right. Dan Schlosser provides further details in his article Linkedin Dark Patterns.