"Copy this message to help prevent HIV! Look I'm an activist xoxo."
Inherent in the meaning of armchair revolutionary is the idea that the person knows that their ideas require them to be physically involved in political struggles, but that instead the person chooses to be intentionally ignorant or dismissive of real-world issues and problems, in an attempt to continue believing in the false reality their views create. In this way the armchair revolutionary is often regarded to see the world in at least a quasi-idealist manner, i.e., one relative solely to his or her own perceptions, rather than bothering with what s/he should really do — to absorb the physical and practical reality s/he would be compelled to see around him/her if s/he stopped the alleged "political posturing" and became an activist in actual political causes
Andy: Posting Kony statuses still? You're such an armchair activist.