|Headquarters||20 Duncan St, Toronto, ON, Canada|
|Alexa rank||1,331 (March 2015[update])|
|Type of site||Social Networking|
|Launched||October 31, 2009|
500px, pronounced five hundred pixels, is a Canadian online photography community that was co-founded by Oleg Gutsol and Evgeny Tchebotarev (artistically also known as “Ian Sobolev”). The Toronto based startup launched its Web 2.0 version in 2009 and is aimed at aspiring and professional photographers; encouraging members to upload their best work.
500px is seen as a place to gain exposure, find inspiration and connect photographers with one another. The site currently has 2.5 million registered users and over 10 million monthly active users.
Evgeny Tchebotarev began 500px in 2003 within the social blogging website LiveJournal, working on it as a hobby whilst he completed a business degree at Ryerson University. Back then, 500px was considered a good size for web display and was therefore the limit placed on photos submitted for review to the community. Once photographers submitted their photos they were moderated and only those of a high quality would make it past the community’s curators and be published onto the site.
Tchebotarev joined forces with Oleg Gutsol and in early 2009 they began work on the mostly automated incarnation of 500px. Image size grew to 900 pixels but the name remained. The two relaunched the site on October 31, 2009. In February 2012 the site got another update with features called "flow", "stories", and "market".
500px has an algorithm in place to allow recently uploaded photos of a high standard to be displayed at the forefront of the site. Views, likes and favourites all contribute to a photo’s rating or ‘Pulse’. The higher the Pulse the more likely it is to get to the Popular page and the higher the chance it has of being seen by other users. The algorithm allows all users, not just those with a following, to have a chance to get their work to the front page of the Popular photos, increasing exposure. The mathematical equations in place also take into account the freshness of an image with Likes and Favorites counting for fewer points as they build up and the Pulse gradually decreasing with updates. This results in the Popular page always displaying fresh content and motivates users to regularly upload new images. Each user also has an overall rating titled ‘Affection’. Taking into account the likes and favourites they have received across all photos, it is a reliable indication of how popular a photographer is within the community.
On April 12, 2012 500px's Terms of Service rose to the top of popular site Hacker News, garnering attention for displaying full-on lawyer speak on the left-hand side of the page and summing up the legalese into basic points on the right-hand side. The resulting discussion on the Terms was mixed, with positive feedback such as ‘awesome’ and ‘one of the cleanest in the industry’ alongside negative feedback that believes 500px may have put themselves at undue risk.
On January 21, 2013, Apple removed 500px's iPad app from its store, citing concerns of nudity available via the app. Apple restored the app on January 29, following the release of a new version with a "Mature 17+ rating" and a report button.
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