If you're using Windows 10, the Photos app will provide the ability to import photos from your iPhone or Android. Just plug your phone directly into the computer, click on the notification banner asking which action to take, and choose Import.
No, just don't claim that you made the phone, and your should be good to go. No need to ask anyone before reviewing, but after reviewing, make sure to include...
Before transferring, make sure Bluetooth is turned on on the computer. Right click on the Bluetooth icon on the system tray (at the bottom right corner of the task bar)...
Most PCs copy photos rather than removing them. If you want to transfer the photos, you'll need to delete them from your camera once they're done copying to your PC.
Open up the website tineye.com. Drag your Facebook profile photo into the center of the page, and then it will tell you if the photo's been used or not.