Please note, I edit and improve most of my posts after I initially place them. I will not hesitate to do this, and without cross-outs, as my main goal is to teach clearly and well, and to help with discovery and good idea creation, not to leave a historically accurate evolution of my writing. In fact, if you think the writing of a post has clunky spots or mistakes, you might want to try looking at it hours or days later. These things may be fixed, plus valuable new material may have been added.
My last post is a good example. It was rushed up late last night to get some ideas out that I wasn't sure if I would have any more time to put up later. It turns out I did find some time the next day to greatly improve it -- so hopefully most people will see the new version.