Tumblr – Is There a Variable for Blog’s URL/Username?

The only other area where it is possible to be seen is in the rss as dc:creator. If you disabled "Show author portraits", then you should be fine (you wouldn't even see it in the RSS)

Other places you will see it are http://www.tumblr.com/blog/subtumblr (under div class class="avatar_and_i") but not /dashboard.

Of course if you reblog the subtumblr or like it any way that can raise speculation. Especially if the subtumblr doesn't have a lot of followers.

I don't think you can do that on Tumblr.

All those "messy numbers" is the Tumblr's Globally Unique Post ID. The part that follows (the "slug") has no identifying purpose on Tumblr -- All that matters is the Post ID.

For example, these are all equivalent URLs:

• my-blog.tumblr.com/post/123456789/my-post-slug-that-tumblr-generated
• my-blog.tumblr.com/post/123456789
• my-blog.tumblr.com/123456789