This is a simple 1 prim object with a texture in its contents that displays that texture using particle technology. The display always looks at you, unlike a normal sign.
The object can be stretched in X and Z to change the size of the display.
It will display brightly if your Full Bright toggle is ON in the Edit Tool -> Texture tab.
It displays the first texture it finds (alphabetically) in the Contents tab of the Edit Tool. It will show a white texture if none are found.
Since it is using particle technology, if there are tons of other particles in your view, they are all limited by your Max Particles graphics setting (found in Preferences->Graphics or your quick preference sliders (usually in lower right button of your viewer)). Particles are rendered by each persons viewer so you can control how many you wish to render - less is less lag, more is more particles to see.
The rezzer is Modify so you can change its size, etc.
The rezzer is Copy so you can have more than one.
It comes with a bonus texture to experiment with.
The display can occasionally flicker depending on lag, your Max Particles setting, and other transparent images near it.
