If you'd just like to tumble along and see what other people are saying, reading, doing, taking pictures of, and finding online, tumble on over to Tumblr. The social media site offers users a host of tools to create customized blogs and post text, photos, videos, Web links, audio files, and more. Other applications let posters use mobile devices and even call in posts as well as send updates to Twitter and Facebook. Tumblr is considered a micro-blogging site by many since users' posts tend to be shorter than standard blogs though there is no character limit. The company was formed in 2007; investors include Spark Capital, Union Square Ventures, Sir Richard Branson, and Sequoia Capital.
The company's latest round of funding, where it took in about $85 million, put its value in the neighborhood of $800 million. Tumblr's lack of revenue isn't keeping interested parties away as Greylock Management Partners, which put money into Facebook and Groupon, and Twitter backer Insight Venture Partners joined the party in late 2011. When it announced the funding, Tumblr also said it has 13 billions page views a month and 30 million blogs on the site with strong growth overseas. It will use the funds to explore organic advertising on the site rather than traditional banner ads. – less