Chris Messina
"hat tip" is a slashtag that is similar in purpose to thx or via. The short form version is simply "ht".
"hat tip" is a polite way to give credit to someone for some hint, tip, piece of news, or other piece of useful information.
Matt Mullenweg
This is using the short form of hat tip (HT or ht):
Here is the lowercase version of the hat tip slashtag:
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