The Role of The Reader in The Text

In my opinion, the reader does not necessarily own the text (s)he is reading.  In one sense, the reader may physically own the text, but it is not hers/his production.  The producer of the text owns his/her work because (s)he created it.
A reader may participate in the text in a few ways.  One way is simply by reading the document.  A second way, for example, is by asking questions about it.  Further, a viewer may interact with the material by analyzing and responding to the content.
In certain situations a reader does indeed belong in the text.  For instance, when dealing with rhetoric material the author's goal is to convince others with his/her text.  In this occasion, the reader is involved in the text because he/she is the audience.  In other forms of text, such as a journal entry, the reader, unless (s)he is also the writer, may not belong in the text.  The creation may only be intended for the writer himself/herself.