The blogging platform Tumblr uses Ask boxes in place of a messaging system. If you have the feature enabled, another Tumblr user can visit your Ask page, type a message in the box and send it to you.

Opinions expressed by Entrepreneur contributors are their own. In that sense, Tumblr is a bit like Facebook — but with a few advantages. For instance, Tumblr blogs can be accessed directly via the Web ...

The Tumblr blogging service lets you set up a private blog that only selected followers can access. However, Tumblr only offers this facility for secondary blogs. Your original Tumblr blog must remain ...