On the topic of videos of lifts, at least with myself, there is always some aspect of bragging involved when I post a video, and quite frankly, if a person's sole reason for posting a video of their lifts was to brag, that would not bother me at all. Pride in the results of many years of hard work and dedication is not a bad thing. Taylor's smile after getting that pr snatch is one of the best parts of the video.
...For me, posting video is a way to get needed critique, plus in today's technological age, seeing really is believing. At the very least, it acts as a journal for myself to reference in the future.