For clarity, you retain all of your ownership rights in your user content. The watermark that is placed on images is only to reduce the amount of users that could potentially download and share your images without your knowledge/permission.
However, by submitting user content to MeetAPinay.com, you hereby grant MeetAPinay.com a worldwide, non-exclusive, royalty-free, sublicenseable and transferable license to use, reproduce, distribute, prepare derivative works of, display, and perform the user content in connection with the MeetAPinay.com website and MeetAPinay.com’s (and its successors’ and affiliates’) business, including without limitation for promoting and redistributing part or all of the MeetAPinay.com website (and derivative works thereof) in any media formats and through any media channels. You also hereby grant each user of the MeetAPinay.com website a non-exclusive license to access your user content through the website, and to use, reproduce, distribute, display and perform such user content as permitted through the functionality of the website and under these Terms. The above licenses granted by you terminate within a commercially reasonable time after you remove or delete your user content from the MeetAPinay.com website. You understand and agree, however, that MeetAPinay.com may retain, but not display, distribute, or perform, server copies of user content that have been removed or deleted.