Since this is my personal blog, I am the absolute dictator here :-)
Therefore, I reserve absolute rights to add/edit/remove stuff at any time both in posts or my own comments with or without any prior warning. In most cases, this willl be usually related with my poor English skills, or with any glaring innacuracies (although if I say something stupid I might leave it there to teach myself a lesson next time :-). I might even remove my own posts or comments. Whatever.
And - I really have to add this - while I allow non-moderated anonymous comments, I will promptly remove any spam in the comments area.