Fascinating tidbit on meditation, but I disagree that posting about oneself on Facebook makes one more bland and boring. If, for example, one is bland and boring to start with, then yes, posting about yourself to Facebook won't really help. However (EDIT) -- if your life is boring, you can post about something else. I've known some individuals who lead the most pathetic lives you can imagine yet they had a decent-size following on Facebook because they regularly posted about politics (which I guess they used as a medium through which to vent about how pathetic their lives were...).

I do see some truth however to your comparison with that idea from meditation. For example, even if you are leading an interesting life, there are many ways to post about it that will make your life appear less interesting than it really is.