http://www.sittingandsmiling.com is exactly what it seems to be. Benjamin Bennett has live streamed and recorded himself literally sitting and smiling for four hours at a time, multiple times in recent history.
Not totally new to the media, Bennett has already been featured on websites such as VICE. Claiming this venture to be completely devoid of purpose, an interview asked why exactly he began what he does, to which he replied, "I don't know. It seemed like something that the internet was lacking. It seemed like it needed to be done, and nobody else was going to do it."