Web site uptime monitoring service Pingdom has put together a nice list of internet stats for 2009. Most of them are from studies and surveys already floating around the web, but Pingdom adds in some of its own metrics.

I had a lot of fun applying my own fuzzy math to a number of the startling statistics.

For example, the number of email users grew 100 million in 2009, to 1.4 billion worldwide. During the same period, email spam increased by 24%, with 81% of all emails being spam.

Now, I know that you can’t assume that 81% of new email users were spammers–one spammer could account for 1% of spam, all on their lonesome–but that just takes away all of the fun!

Another interesting observation. While Flickr is thought of as being the top image hosting site–with 4 billion images hosted–Facebook users upload more pics in a two-month span, than hosted by Flickr–about 2.5 billion per month.

And, just in case you thought the web-world rotated around North America, here’s a reason why you may want to provide language translation on your site: