Ranking Source Code Comment Delimiters

I present a definitive ranking of source code comments. I included some of my favorites and least favorites. I rougly went off of the Rosetta Code list, but didn't put in many of the exotic languages. The ones I did put in were arbitrary, so if your favorite language isn't in these rankings please let me know so I can judge it.

Multiline Comments

1. #| |# - (two way tie) looks weird but easier to type
2. {- -} - (two way tie) good but a little hard to type
3. /* */ - only if it's nestable
4. --[[ ]]-- - consistent with -- but too many characters
5. %{ }% - easy to change between line and nested, still ugly
6. <!-- --> - Clocking in at a whopping 7 characters, the HTML gets points docked for its ridiculous overindulgence. Not to mention its asymmetry.
7. (* *) - Parentheses and asterisks are already the most overused of characters. You have the whole keyboard to work with! Consider the ambiguity of parsing something like (* try (simpl in *) *)?
8. """ """ - is it a string? a comment? who knows???

Single Line Comments

1. # - "The comment that will probably work"
2. -- - elegant look but 2nd place because it has two characters
3. ; - feels like you're hacking, good use of homerow
4. // not bad, but just is a little ostentatious, you know?
5. % is typeset so many different ways, looks crunched in monospace
6. ! - drawing your attention needlessly
7. " or ' - leaves things... shudders unmatched
8. C - what are we using, punch cards?
9. dnl - discard to next line, more like discard this comment scheme.
10. REM - seriously?
11. ⍝ - oh, APL.

Honorable mention goes to: BibTeX where everything is a comment unless you say otherwise.

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