While doing so does make the entries more readable, it reduces the authenticity and makes some people (as evidenced by some of the Rants you've gotten) suspicious of who's really writing the posts.
Yes, reader entries are edited for clarity, brevity, and style. (Hey, I cleaned up your letter a little!) While it's true this might take away from some of the immediacy of the readers' letters, as a professional in the publishing industry, I find it important for all of the material on JackinWorld to hold up to a certain publishing standard. My work is modeled after that of such noted sexuality writers as Shere Hite and Beth Winship, both of whom employ "publish-quality" standards of editing, even for very young reader contributors. In doing so, however, let me make it clear that I don't significantly change the intent or actual content of the letters. This is especially true in the Raves & Rants page, which I edit more delicately, for obvious reasons.