Photo credit: http://www.benedictcumberbatch.co.uk/sherlock-production-stills/
I have no clue whatsoever who is behind this, but Sherlockology - a new fansite dedicated to the BBC drama Sherlock - is launching this month.
Follow the link - there is already a promotional trailer for the new website on there:
I have no idea whether it will be any good or not, but it looks intriguing, and so it is definitely worth checking out when it launches. They are already live on tumblr: