Orbs..What?

I wondering..what is orb. Then i searched it around internet and i founded this article. Please read and tell me your opinion.
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Orbs are transparent balls of light commonly found in photos. Orbs have even been recorded on video moving across rooms. Orbs fascinate many, as they are commonly captured in purported haunted places...

Orbs (also known as "ghost orbs" or "spirit orbs") are often thought to be the souls of people, as they appear as "balls of light" apparently floating or moving in the picture. Sometimes, orbs can appear in colors, such as blue, green, red, etc. Most
orb images, however, are caused by flash reflection off of glass, mirrors, walls, dust, moisture and even insects.

Digital cameras seem to take a higher amount of orbs in photos. Some orbs are definitely energy, and energy is spirit. However, no one knows what this energy is, for sure. Plasma balls of light or ghost lights (orbs) have been proven to be electrically charged. Spirit (or ghost) orbs will normally have a more solid
center, without any spokes radiating from the center.

Paranormal orbs have even been photographed with faces in them - whether a coincidence, is for the viewer to determine.