I clicked on the link and was prepared to watch it, but after 30 seconds the presenter made a FUNDAMENTAL error. he was going to compare growth of bitcoin to natural populatin like rats on an island and then saying that bitcoin's PRICE GROWTH of 1000% was natural. I stopped 2 seconds later. DUDE YOU CAN'T MEASURE BITCOIN AS AN IDEA IN TERMS OF ITS PRICE ON AN EXCHANGE!!!! you have to measyre things like real transaction volume buying trade goods. look at this chart showing trade volume does this show you 1000% growth? the person in that video is either fucking stupid or he is vested and just wants others to buy loads so that he can cash out.
http://blockchain.info/charts/estimated-transaction-volume?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=the rats thing was just an analogy he used to explain what an S curve is it wasn't to compare bitcoin. You need to give it a chance and watch further were he analyses Twitter and Facebook Vertical growth period compared to bitcoin. The price is irrelevant to this topic, what you were concerned about is market saturation / peak growth a point which we haven't reached yet with Bitcoin.