Make it BIG. Type, copy, paste.
Big text styles use squared, boxed and heavy bold Unicode letters that read louder than normal text in comments, bios and titles.
Copy the squared or negative-squared style for maximum size, or bold serif for a cleaner heavyweight look.
Type your text and copy the squared or bold style. They are Unicode characters, so they paste anywhere.
Yes, on most platforms. If one style is filtered, try the other variants.