Big ❤ — Milton Glaser on his heart symbol

I did the bloody thing in 1975 and I thought it would
last a couple of months as a promotion and disappear.

Milton Glaser,
the graphic designer who submitted his now-iconic rebus in 1976 to New York State tourism free of charge.

“The trademark helps beckon 140 million tourists to the Empire State each year. As others tried to tap the design over the years, state legal eagles have filed close to 3,000 trademark objections.” [ Business Week ]

Since then Internet users have picked up the sign to use “heart” as a verb in messages, resulting in the Oxford English Dictionary adding a new sense of the meaning of heart.