"Loose ties have traditionally played a key role in meeting partners. While most people were unlikely to date one of their best friends, they were highly likely to date people who were linked with their group of friends; a friend of a friend, for example. In the language of network theory, dating partners were embedded in each other’s networks.
Indeed, this has long been reflected in surveys of the way people meet their partners: through mutual friends, in bars, at work, in educational institutions, at church, through their families, and so on.
Online dating has changed that. Today, online dating is the second most common way for heterosexual couples to meet. For homosexual couples, it is far and away the most popular.
That has significant implications. “People who meet online tend to be complete strangers,” say Ortega and Hergovich. And when people meet in this way, it sets up social links that were previously nonexistent...
research into the strength of marriage has found some evidence that married couples who meet online have lower rates of marital breakup than those who meet traditionally. That has the potential to significantly benefit society. And it’s exactly what Ortega and Hergovich’s model predicts."
FB: "if the researchers add random links between people from different ethnic groups, the level of interracial marriage changes dramatically. “Our model predicts nearly complete racial integration upon the emergence of online dating, even if the number of partners that individuals meet from newly formed ties is small,” say Ortega and Hergovich."
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