Syntax highlighting is surely a good thing to have in answers here, as it makes the unreadable code more readable.
However, many users, especially new users, may not know about it, and even if they do notice that some posts have enabled syntax highlighting, they may not know how to use it.
Also, there were many edits that only add syntax highlighting, and I don't think it is a very nice idea to perform such trivial edits.
So, do you think that it would be good to encourage the use of syntax highlighting? And if you do, how should we do it? Perhaps mention it in the FAQ? Or, if possible, in the formatting help?