I am completely uninterested in being badgered about social causes when I visit a site for expertise. I literally do not care what the cause is. I don't care which political groups support it even if those are the same as political groups I personally agree with, and I am disinclined to spend time here if on every page I have to scroll past some kind of social/political guilt trip.
I am disgusted by the recent Internet trend of people scrambling whatever platforms they have access to to win votes for some political stance, and I hate that Stack Exchange is doing this now too.
(Alternately, please add some additional class to the system message's HTML
div, so I can reliably userscript it out of existence.)
Edit: Here's a general cause argument:
+1 just because this sort of thing can get out of hand, and then SO is covered in awareness-ribbons of various colors. – ಠ_ಠ Won't♦
Bingo. Where does it stop on the Stack Exchange network? "Just this once, because this cause is the important one (but the other causes aren't)" is terrible logic.
Edit: To be clear, this point of this post isn't a pro/con on SOPA, but SOPA is the latest case in the
Abuse of the non-closable system message for non system status messages and
Use (arguably abuse) of of the popularity of StackOverflow to drive traffic to some social cause
I disagree with both of these points. Your vote on this question should reflect the merit of these points for discussion.