Wouldn't it have been easier for them to redirect everything to a static black page instead of overlaying this with fancy CSS magic? Not to mention the fact tha

Wouldn't it have been easier for them to redirect everything to a static black page instead of overlaying this with fancy CSS magic? Not to mention the fact that every page still gets loaded before the banner pops up, which is not only visually jarring, but also puts completely unnecessary load on their servers. Doesn't serving content cost money?