In 2007, David started the company Tumblr.com. This site had the aim to help anyone share anything online. It was a great way for people to share ideas, and show creations, and products. While this seems like a really cool idea who would really use it? 4.2 million of us is the latest estimation. He has been handed $5.5 million in venture capital funding and he has been able to help hundreds and thousands of users to share their content around the globe. This was a huge step not just for himself as an entrepreneur but also for all the other entrepreneurs who use his product as a platform for their own ideas.