Tip: Never use the number eight followed by a right parentheses. Ever. Somewhere down the line some device or web site or widget will turn that character sequence into the “cool” smiley.
Just look at that little bastard there, all smiling and shit, feeling oh so proud of himself! I found the unexpected presence of the cool smiling in a post about improving your writing just a little ironic. 🙂
If you must number things, use “ordered lists.” (If you are in HTML.) WordPress provides a little icon for that in their online editor. If not, then try using periods. They seem less susceptible to involuntary smiley replacements.