In the fall of 2003, a group of friends from Sweden decided to launch a BitTorrent tracker named 'The Pirate Bay'. Today, roughly 5 years after this historic day, the founders of the site are celebrities in Sweden, and rockstars on the Internet.

The Pirate Bay its roots lead us back to Piratbyrån (The Bureau of Piracy), a pro-piracy organization which was founded in August 2003. Since there was no filesharing network in Sweden at the time, Piratbyrån decided to launch one, using the relatively new BitTorrent protocol.

Peter Sunde (Brokep), one of the co-founders together with TiAMO and Anakata, later said that their initial goal was to build a Scandinavian BitTorrent community. “At this time there was one big torrent site, which was called Suprnova, but they mainly had international content. We and Piratbyrån wanted more Swedish and Scandinavian content. So we started a big library, and that is The Pirate Bay.”

When the site launched exactly remains a mystery though, as we read on The Pirate Bay blog. “The official birth date of the site is not 100% sure. We’ve been discussing it back and forth the past week and decided that screw it, you don’t need to know which day. We’ll celebrate anyhow!”

The hardware setup was really primitive initially. When the site launched it was hosted in Mexico, where Anakata hosted the site on a server owned by the company he was working for at the time. The site moved to Sweden later, where Fredrik hosted the tracker on his laptop for a while, But, as the site grew, it had to move on to a more powerful setup.

The Pirate Bay soon became one of the largest BitTorrent trackers on the Internet. By the end of 2004, a year after the site launched, the tracker was already tracking a million peers and over 60.000 torrent files. Around the same time, the founders also noticed that not only Scandinavians were interested in their site. In fact, 80% of their users case from other parts of the world. Because of increasing worldwide popularity, The Pirate Bay team completely redesigned the site, which became available in several languages from then on.

Due to these changes, The Pirate Bay grew even faster, and the number of peers tracked by the site grew to 2,500,000 in 2005. Its popularity didn’t go by unnoticed in Hollywood either. Copyright holders started to send out takedown notices, which were often mocked by the site’s founders. Eventually, however, The Pirate Bay got raided, following pressure from Hollywood and the USA.

The raid brought the site into mainstream press, not in the least because it came back online within three days. All this publicity consequently resulted in a huge traffic spike, sorting quite the opposite effect of what Hollywood had hoped for. In the years that followed, ISPs in other countries including Denmark and Italy were forced to ban the site, again it only increased The Pirate Bay’s popularity.

Last week the tracker reached another milestone, as it broke the 25 million peers mark. This effectively means that at any given point in time, more than 25 million people actively trade files thought the Pirate Bay tracker. Not worried by the upcoming court case in 2009, the ship sails on, larger than ever before. That is certainly something to celebrate.