Tumblr, Twitter, etc - For stream-of-consciousness bookmarking, these sites use a special kind of metatagging called "hash tags" (created by putting a # symbol in front of a word, like "#lovetoknow").
Tumblr is another blogging site that allows you to express yourself with as many words as you need and allows you to upload pictures as well.
The key is that the communication needs to be two-way, whether you have a video blog on YouTube or a "micro-blog" like Tumblr.
Tumblr is a quick way to blog, share pictures, let others read your favorite quotes, and more.
Cnet calls Tumblr "Microblogging done right."