Today is Facebook’s 10th birthday. For better or for worse, the little site named ‘thefacebook’ created in Mark Zuckerberg’s dorm room on 4 February 2004 has become a global phenomenon

1. Why is Facebook blue? Facebook’s logo is blue because Mark Zuckerberg is red-green colour blind. “Blue is the richest color for me. I can see all of blue,”

2. You can browse Facebook upside down. Facebook currently supports more than 70 different languages – including English (Pirate) and English (Upside Down).

3. Zuckerberg’s famously low-key wardrobe (either a grey t-shirt or a hoodie) is so that the CEO saves time deciding what to wear each day.

4. In July 2006 Zuckerberg turned down a $1 billion offer for the site from Yahoo. He was 22 years old at the time and owned 25 per cent of the company.

5. Around 350 million photos are uploaded to Facebook every day, with the site estimating in September last year that users had so far put up more than 250 billion images.

6. Following the financial crisis of 2008 and 2009 Iceland decided to rewrite their constitution using Facebook to solicit suggestions from citizens.

7. A YouGov poll claimed that three-quarter of UK Facebook users’ photos showed someone drinking or inebriated.

8. Zuckerberg isn’t much of a Twitter fan. Despite having nearly three hundred thousand followers on the service he’s only tweeted 19 times – once in 2012 and the rest in 2009.

9. Facebook operates a bounty hunter program – for bugs. Like many other big technology companies Facebook offers cash rewards to security researchers who point out flaws in the site’s code. The minimum payout is $500 and the largest prize to date has been $33,500.

10. More than a third of divorce filings in 2011 referenced Facebook, said a survey from UK-based legal firm Divorce Online.

Do you know any others? Let us know