Orbs?

Pretty much every ghost hunter out there has encountered the phenomenon of orbs, myself and my team included, and have wondered what they were and what they meant. The die hard hunters say they are evidence of ghostly presence or spirit activity and tie them in with high EMF readings. The skeptics say they are nothing more than dust on a lens.
Now at the risk have having a lot of upset readers, I'm going to say that I agree with the latter group. I have noticed that since more and more "orbs" are showing up with the use of digital cameras, I think they must have something to do with that, although the same orbs have been found in disposable cameras as well as 35mm, 110, and even Polaroids. I attribute these to the flashes.
To me, there are just too many photographs with orbs present for them to be "ghosts" that are captured. If they were, there would be millions and millions of ghosts around us and I believe that if there were that many, there wouldn't even be a need for the word "paranormal" as the activity would just be "normal" every day occurrences.
Keep in mind, I am only talking here about the orbs that are captured on film and not the moving balls of light seen with the human eye during investigations or while present in a home or cemetery or any unexpected place. These are another phenomenon altogether. These lights are often referred to as "spirit lights" and have been seen floating towards an energy source they are attracted to such as a human being during an investigation or a haunting. These can be residual energy. If you have a comment to make regarding this post, or photos you would like to share, please do. Any point of view is welcome.