I guess the fact that I use Firefox, Adblock, NoScript and Pop-Up Blocker means I don't have to even consider giving somebody my cell number, because I never get asked. Photobucket isn't showing me this, and it's quite possible *they* are being spoofed by a third party or a carrier. It wouldn't be the first time.
Good grief, people, these scams have been going on for the last decade. Stop using Internet Explorer and use Google to install some pop-up blockers. A little education and critical thought go a long way here: would you give your cell number to someone who walked up to you in the street?
DON'T GIVE OUT INFO! CLICK THE "X".