10 years ago this Sunday, with modest expectations and little fanfare, Marco and I launched a side-project called Tumblr—a place where anyone could “post anything and customize everything.” Why did the world need Tumblr? I wasn’t sure it did. But I did. 2006The net is vast and infinite. The web browser has become a multimedia powerhouse. “Social media” is upending news and entertainment. One-year-
![2006](https://cdn-ak-scissors.b.st-hatena.com/image/square/ab5d2efc764939980327689b71c290892fe9ce36/height=288;version=1;width=512/https%3A%2F%2F64.media.tumblr.com%2F7ba82b8a75654304a74c07b18fd6f65f%2Ftumblr_olhgk9LNpV1qz4rgqo1_1280.png)