Currently, the 15 char minimum on comments can be defeated by padding out the middle with spaces.
HTML ignores extra spaces anyway.
I got sick of the umpteen bajillion "bugs" opened on this, so we "fixed the bug".
Why bother. If folks are prepared to game the system with spaces to get a short comment in, they won't be fussed using other characters
This will lead to some really nasty visual comment hacks that make the cure worse than the disease.