Think of Tumblr as micro-blogging on steroids (technically, it’s called “tumblelogging”). Whereas Twitter and similar services limit posts to 140 characters or less, Tumblr lets you post updates of any length, although it’s best suited to short-format posts. Tumblr bridges the gap between full-blown blog and micro-blog.
Tumblr is also an option for designers and creative people, because it gives you complete control over the look of your tumblelog. It also offers great opportunities for theme designers, especially with the recent launch of premium themes (which range in price from $9 to $49). Read on for your complete guide to using and designing for Tumblr.