We get the impression that Facebook is on a big mobile photo sharing kick: just weeks after it bought Instagram for a cool billion, the social network has just hired the staff behind Lightbox. The two-man team of Nilesh Patel and Thai Tran is bringing its mostly Android- and HTML5-focused knowledge over to Facebook, where it's hoping to reach many, many more people. You'll have to wait awhile to see what the Lightbox team brings to Facebook's ever more mobile platf