I'm still bummed that some dictionaries have given up the fight and accepted "kudo" as proper usage.
Background: "Kudos" is a Greek word meaning "praise". It may happen to end with an "s", but it's not a plural. You can "give kudos" to someone (i.e. give praise), but you can't "give them a kudo". That's a incorrect as "give them a prai" instead of "give them praise".
And yet, a lot of people make that mistake, and now some dictionaries are throwing in the towel and allowing "kudo" as a legitimate word because that's how it's often used in "common usage". Sigh.
It may be "common usage" for a lot of people to pronounce "ask" as "axe", but that doesn't make it an acceptable alternative pronunciation...