Facebook exploded Wednesday after news broke that the U.S. Supreme Court ruled that the Defense of Marriage Act was unconstitutional, and the social network reported more than 4 million related mentions.

Mentions of the top 10 terms in conversations that were relevant to the DOMA ruling topped 1.5 million from 6 a.m. to 8 a.m. PT (9 a.m. to 11 a.m. ET) Wednesday, reaching 3 million two hours later, and topping 4 million by 1 p.m. PT, Facebook revealed in a post on its Newsroom.

According to the social network, “DOMA” was the most-talked-about term, while “unconstitutional” saw the largest percentage increase, skyrocketing by nearly 60,000 percent by mid-morning Wednesday. “Struck down” and “Prop 8” (for California’s Proposition 8) also experienced huge spikes, Facebook added.

Celebrities who chimed in to express their support for the Supreme Court ruling — many of whom used the hashtag #PrideConnectsUs — included:

The heat map below from Facebook shows how users across the U.S. expressed their happiness with the ruling, with California showing the highest level of satisfaction.

Readers: Did you discuss the DOMA ruling on Facebook Wednesday?