How can Blogging assist and support you as a dance student and artist?

First of all a dancer needs to know how they can document, so heres a small list of how I do it:
Videos
Photos
Drawings
Writing
Interviews
Twitter/Facebook
Contacts Book
Blogging
Podcasts
Youtube
Journal

So now theres are plenty of choices to choose from, but a dancer also needs to understand why it is so important to document. Here are some of the most important reasons as to why i document:
To remember what I did for future reference
To see what areas I need to improve on
To reflect on the content itself
To see the changes and improvements through time
To teach others
To learn from others
To help communicate ideas
Relate older work to the new
To support ideas
Promote myself in the industry

To me documenting is very important as it helps me mainly to focus on getting pieces to look their best, I believe the more a dancer documents the better the outcome is as the finer details are thought of.