7 Trends You May Have Missed About Twitter フォロワー 増やす
http://sergioiajy964.wpsuo.com/how-did-we-get-here-the-history-of-twitter-forowa-zengyasu-told-through-tweets
The hardware and software package you have to digitize online video in to the Quicktime structure may be very low-cost, as compared to the mpeg structure. So its less of a challenge and cheaper to generate video