Tumblr gives users the ability to "tag" posts with keyword phrases that summarize their content. Using these post tags, you can browse recent posts containing popular tags or look up a specific blog ...

If you use Tumblr, you can encourage guests to contribute to your blog using either the "Ask" or "Submit" feature. The former allows users to send questions to your blog, and the latter lets guests ...

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 ...