A vast repository of pop culture memes and internet humor, the blogging service Tumblr has grown significantly since its launch in 2007. With over 12 million blogs and with the recent raising of $30 million in funding, some see Tumblr's future as taking on blogging services like WordPress and Blogger.

The site's hallmarks are its streamlined posting dashboard and reblogging feature. Add on likes and short replies, and this gives the site a familiar feel to social networks like Flickr, Facebook, and Twitter.

By Thomas Hughes as seen in Technology in the Arts