Please provide a valid email address; winner will be notified via email. (lilmisscakes.com)
It will ask whether you want to set a password or a pattern and to provide a valid email address in case you lose it. (greenbot.com)
Simply enter your gender and what you're looking for, include your age and location, and provide a valid email address which you will need to verify. (top10sexdatingsites.com)