The 21st century version of "nothing to write home about". Something that's not worthy of being posted on Facebook, Twitter, or another social network site.
Chris: So what did you think of that burger?
Laura: Meh, nothing to post about.

Matt: So what did you do this weekend.
Andy: I went to a car show, ate some fish, and collected loose change. Nothing to post about
by Chris in South Korea June 10, 2012
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