We are all human and one of the toughest parts of writing content for your blog is editing your own work. You can read the same mistake a hundred times and miss it. Your eyes are actually playing tricks so read what you think should be there, not what is actually there.
If we accept that we are fallible and that we can and do make mistakes, should we go back and correct those mistakes? There are some purists who feel that what has been written should stay, mistakes and all. There are others who are rather pedantic and they will not only correct any mistakes, they will also rewrite sentences for better effect.
Who is right? It’s your content. You can do what you want with it. To be fair to your readers however, you should be big enough to admit your mistakes when making corrections. This can easily be done use the strikethrough feature that most blog software uses (ABC).
If a reader has left a comment pointing out errors, make the alterations using the strikethrough and then leave comment back thanking them for pointing out the error.
When it comes to rewriting the content, I generally draw the line. In the first few hours after publishing I may makes some tweaks, otherwise it stays the same. If I have had a change of heart, well there’s another topic for a new post at a later date.
Correct mistakes is a personal part blogging. Your blog content does represent you so glaring spelling mistakes may not be in your own best interests. Using stikethough shows that you are humble enough to correct mistakes – it also shows you go back through your work and check it.

I can’t bereive that wrikers don’t ploofread their armticles beflore they puglish them. To me that seams to show a rack of prodesionalism
attentoim to derail.