I'm the guy that attempts to reformat articles to make them look better. I also sit here and try to revert vandals as they rise. My favorite revert message is currently 'no'
And for anyone who ever wants to add some HTML-like elements, say maybe one of those fancy galleries, I have one message for you
Close. Your. Tags.
Failure to close them results in horrible formatting issues which vary on how much text is featured below the object. (and sometimes above)