When I was weighing up blogging sites, Tumblr fast ended up on the bottom of my list for having terms and conditions that were suspiciously unclear: "Tumblr wil

When I was weighing up blogging sites, Tumblr fast ended up on the bottom of my list for having terms and conditions that were suspiciously unclear: "Tumblr will have a non-exclusive, worldwide, royalty-free, transferable right, under all of Subscriber’s intellectual property rights, to copy, cache, publish, display, perform, distribute, translate and store such Subscriber Content and to allow others to do so." So they have copyright to do what they wish with my content, and I can't withdraw it? Hm... Contrast this to Wordpress.com's much clearer T&Cs: "By submitting Content to Automattic for inclusion on your Website, you grant Automattic a world-wide, royalty-free, and non-exclusive license to reproduce, modify, adapt and publish the Content solely for the purpose of displaying, distributing and promoting your blog. If you delete Content, Automattic will use reasonable efforts to remove it from the Website, but you acknowledge that caching or references to the Content may not be made immediately unavailable."