This article exposes information on one of the major social network in the world: Facebook, and shows impressive figures about their 10-year old company. During these years Facebook has impacted on society greatly, most of the people in the world use Facebook. More than 1 thousand million people access this social network every month, and 556 million access it from their cellphone EVERY DAY. An unbelievable fact is that 8 years ago Facebook had just 12 million users: 0,01% of what it has today.
This article is reliable because it was published by The Guardian, which is a newspaper that was founded in 1821 and is one of the most read newspaper’s in the UK. This is also one of the 5 most read news website in the internet worldwide and has more than 4 million followers in Google+.(Nothing in comparison to the numbers presented in relation to Facebook users, but enough to make it a valid source). Because of these facts I think we can consider this site as a reliable(valid) article.