Pottermore was in development for two years before it was released in April 2009.
On June 15th 2011, numerous Harry Potter
fansites began releasing co-ordinates to places on Google Maps which revealed hidden letters.
These hidden letters spelt out E-T-O-T-O-P-E-R-R-M
which many thought meant "More Potter."
A YouTube video was released on June 23rd 2011 by Rowling to announce Pottermore
and this stated that it would be open in October 2011.
However, this date was then delayed to April 2012.
Watch the YouTube announcement by clicking here
Pottermore was officially launched to one million beta testers between July 31st and August 6th 2011.
To become a beta tester users had to complete a "Magical Quill" challenge.
Daily competitions allowed 143,000 people to gain access to the website per day. Once the puzzle was solved, users had to answer the clue by using a special website address then locate the Quill on the website that they were taken to.
The Pottermore Shop, which features the Harry Potter e-books and digital audiobooks, opened on March 27th 2012.
Pottermore announced on April 14th 2015 that "big changes" would be coming to the website, with September 2015 being the last time the House Cup would be awarded to one of the houses.
Read this announcement below on the official website by clicking here
Pottermore was closed and a re-vamped version opened on September 22, 2015.