But as our smartphones become increasingly powerful, fewer of us are dating from behind our desktops, rather turning to the digital devices in our pockets.
Around one in four relationships start online now, and among the millennial generation, the number is likely to be even higher.
Andrew Auernheimer, a controversial computer hacker who looked through the files, used Twitter to publicly identify Adult Friend Finder customers, including a Washington police academy commander, an FAA employee, a California state tax worker and a naval intelligence officer who supposedly tried to cheat on his wife.
Asked why he was doing this, Auernheimer said: "I went straight for government employees because they seem the easiest to shame." Millions of others remain unnamed for now, but anyone can open the files -- which remain freely available online.
Cost: Free The low-down: Tired of unsolicited dick pics and creeps pestering you for nudes? Created by former Tinder co-founder Whitney Wolfe, the ultimate female-friendly app lets women run the show. It's only the woman that has the opportunity to send the first message.
Billed as a safe, friendly rival to Tinder, this app works on the same premise: users swipe right to approve and left to decline. If you match and don't say anything to a new connection within 24 hours, they're deleted (for same-sex relationships, this works both ways). In the words of Wolfe: "You're not going to go on a dating app where women make the first move if you don't respect women." Also good to know: pornographic images are banned.