well, the circle is also not necessary, people just gotta make a dot, like a pin prick, simple as that.
It's not the highest resolution, nor the slickest, but without sounding immodest, i do think it may be a Rosetta stone for modern crowd sourced, institutionally validated, commerce. any object in any video (primarily youtube) could be linked, and those doing the linking could make a buck for doing so, not tonnes, but proportionate to returning an empty beer bottle on a global scale. a legal version of the office space scam.
n2gritty introduction from Me You Them on Vimeo.