As TechCrunch writer MC Siegler logged into his Tumblr account this morning where he operates his personal blog from, he noticed a little something at the top of his dashboard. It read “We’ve just hit our 10 billionth post! Thank you so much for being a part of this awesome journey”.

The number 10 billion is amazing in and of itself, but the fact that they went from 1 billion to 10 billion posts in just one year is phenomenal. In 2007, Tumblr launched as the first microblogging/sharing platform.

Here are some other impressive numbers:

• Just last July Tumblr was seeing 1.5 billion pageviews a month and now they’re at at billion
• Tumblr says they are now at 28.5 million blogs, doing around 36 million posts a day
• They are about to close on a round of funding that should value them near $1 billion

Some features of Tumblr include hundreds of themes to choose from, the choice to create your own themes, mobileability, custom domains and the ability to post text, photos, quotes, links, dialogues, audio, video, slideshows, and more.

Do you use Tumblr? If so, tell us what you love about it! Also, be sure and read Allison’s excellent post on The History of Blogging. It’s a very interesting read to see where everything came into play and where we are at now in the blogging world.