This guy, whose name is Erwin Sauders, claims to be able to see them, and has captured some of them on video, which he shares on youtube. Over the months, he amassed a large following of fans. And then Erwin stopped making his relaxing videos and vanishes. His fans became worried and searched for him, thus unraveling a mystery.
50% of the people who watch Erwin's videos say that the "pixies" he captures are fake CGI figures. The other 50% are idiots. Who is Erwin Saunders, and why is he making those videos with fake pixies, and why does he want people to believe in them?
Erwin's pixie video:
Erwin could be Paul Smith: