Do you develop on GitHub? You can keep using GitHub but automatically sync your GitHub releases to SourceForge quickly and easily with this tool so your projects have a backup location, and get your project in front of SourceForge's nearly 20 million monthly users. It takes less than a minute. Get new users downloading your project releases today!
Local pranksters have stolen a similar billboard that was set up for similar testing inside a mall and conveniently placed it directly across from the railway station's new "spy board", resulting in what is now being dubbed "the world's longest staring competition".
Or they could have it change to some strange/odd image that'll freak the viewer out. They'll turn to the nearest person to be like "OMG! DO YOU SEE THAT!" and the sign will have quickly changed back to the previous ad, leaving the other train goers to think that one person is crazy.