Here's their current chart on Samsung's "Extreme Sheep" viral video.
The chart shows the classic "long tail" Pareto distribution pattern. There is a rapid rise, momentary peak, and then a somewhat rapid decline leading to continuing interest at a lower level. See video @ my March 30 post "Motivation to Share."
This is the current chart for vtm's "Search for Maria" viral video.
You can see interest develop a bit more slowly for this viral. Perhaps this is due to a different strategy in seeding the viral. And of course the content of the two videos is different leading to differences in the "seek and share" process. The decline appears to be rapid, and it will be interesting to follow the pattern over the next few weeks. See video @ my April 6 post "The Search for Oneness."
Many lessons can be garnered from the information provided by the Viral Video Chart.