The Rhetoric of Blogging

When blogging about rhetoric, it forces the author to reflect on his or her own use of rhetoric.  For instance, I must always ask myself: what is the exigence for my writing?  In other words, what prompts my writing?  The class schedule requires that I perform a weekly blog post, and if it wasn't for my desire to earn a good grade in this class, I would not write these posts.  Hence, the exigence is the class requirement combined with my determination to earn a high grade.  In addition, this is an extension of my determination to earn a Master's degree; I want to learn about the art of teaching writing so that I can better serve my students.  The more my students will learn, the better society and future generations will be.  Thus, in a way, the exigence for my blogs stems from my desire to see a better and brighter future.
Another question I constantly ask myself is: who is my audience, and what is my purpose for writing to them?  At times, I write for my teacher.  Other times, I write for future employers that may look upon my writing.  In addition, I write for myself so that I may be able to look upon these blog posts in the future and refresh my memories.  And finally, I write so that my future students can visit my blog and read my reflections on rhetoric.  Trying to juggle these different audiences can be difficult and even contradictory.  For instance, what I write as a reminder to myself in the future may not be the same thing I would write to a prospective employer.  These different audiences forces me to write as different speakers.
Because I write for four audiences, I have to code-switch between the way I write.  For example, if I write for my teacher, I write in a more formal, academic tone.  When I write for myself, I write using a shorthand that I would be able to understand: self-comprehension would be my main focus.  When writing for future students, I write as an authority figure disseminating information on rhetoric.  And finally, when I write to prospective employers, I write very formally as an authority figure using academic language and focusing on theoretical rather than practical applications. 
The depth of my exigency and the constant shifting of audience provide an overview of my rhetorical process while blogging.  The speaker and audience is in constant flux while the exigency remains the same.  The purpose may change, but the motivation doesn't.  This may lead to a disjunction among my blog posts as one may be informal and shorthand while another may be formal and employ copious amounts of academic language.  Overall, I try to produce the best writing I can regardless of which audience I am primarily writing for.