Tumblr vs. Twitter
Forrest: Is tumblr an alternative to … twitter?
Mike: Sort of - Twitter is a microblog, which limits you to text entries of 140 characters or less, which is virtually nothing; only a sentence or two at most.
Tumblr falls into a category of web apps called tumblelogs, which do not have character limits and can also include mixed media such as images and video. However like microblogs, posts to tumblelogs are expected to be quick and relatively unedited - perhaps a quote here or a thought there, but not like the long well-thought out content you see in blogs and wikis.
Tumblelogs - http://en.wikipedia.org/wiki/Tumblelogs
Blogs - http://en.wikipedia.org/wiki/Blogs
Microblogging - http://en.wikipedia.org/wiki/Micro-blogging
