Why has the SOPA banner disappeared from Stack Overflow when it is so important? The negative reactions don't seem to be very strong.
It was only scheduled to be up for 6 hours. Because system messages show on every page with no option for dismissal, this struck the best balance between showing it to a lot of US programmers during the workday and not being endlessly annoying.
I believe the following photograph may shed light on the subject.
The notification banner has a maximum life span of 48 hours. Whoever put it up this time specified the lifetime of the banner to be 24 hours (or so).
From the comments below, it appears that it was for 6 hours exactly, which happens to match peak usage times in the US.
So, it appears to have been calculated to reach as many developers in the US as possible, with a minimum disruption to others.
The moderator elections banner was only up for 48 hours.
Seeing as it wasn't reinstated for the elections (though most people wouldn't know the URL any other way), why should the SOPA one be reinstated?